Formal, Professional
Professional, Authoritative
Maintaining the correct tire pressure on Nissan Altima vehicles is critical for optimal performance and safety, an aspect heavily emphasized in the official Nissan Altima Owner’s Manual. Proper inflation, typically measured using a tire pressure gauge, directly influences fuel efficiency and handling characteristics of the Nissan Altima, contributing to a safer driving experience. Furthermore, adherence to recommended pressure levels, often impacted by seasonal temperature variations, ensures even tire wear and extends the lifespan of tires, potentially saving owners money in the long run.
Maintaining the correct tire pressure in your Nissan Altima is not merely a routine check; it’s a cornerstone of vehicle safety, optimal fuel efficiency, and responsive handling. Proper inflation ensures that your Altima performs as intended, delivering a safe and enjoyable driving experience. This section will explore why tire pressure is so crucial, laying the groundwork for a comprehensive understanding of its impact.
The Crucial Trio: Safety, Fuel Efficiency, and Handling
For Nissan Altima owners, maintaining the correct tire pressure yields tangible benefits across three critical areas: safety, fuel economy/gas mileage, and vehicle handling. Let’s examine each in turn.
Safety First
Safety is paramount. Underinflated tires increase the risk of tire failure, particularly at high speeds or under heavy loads. Properly inflated tires provide optimal grip, reducing braking distances and enhancing stability, especially in adverse weather conditions.
Fuel Efficiency and Gas Mileage
Fuel efficiency is significantly affected by tire pressure. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. Maintaining the recommended PSI (Pounds per Square Inch) can lead to noticeable savings at the pump.
Precision Handling
Handling is also key. Correct tire pressure ensures that your Altima responds accurately to steering inputs, providing a confident and controlled driving experience. Over or underinflation can lead to unpredictable handling and reduced stability.
Key Concepts and Components
Understanding the terminology and components involved is essential for effective tire pressure management.
The Tire Itself
The tire is the foundation. It’s the only part of your vehicle that comes into contact with the road. Its health and condition are directly linked to its inflation level.
PSI is the unit of measurement for tire pressure. It indicates the amount of air pressure inside the tire. Knowing the recommended PSI for your Altima’s tires is critical.
The Tire Pressure Monitoring System (TPMS) is a valuable safety feature. It alerts the driver when tire pressure falls below a certain threshold. Responding promptly to TPMS alerts can prevent serious issues.
Neglecting tire pressure maintenance can lead to a cascade of problems. From increased tire wear and reduced fuel efficiency to compromised handling and potential tire failure, the consequences can be significant. Regularly checking and adjusting tire pressure is a simple yet vital step in ensuring the longevity, safety, and performance of your Nissan Altima.
Decoding Your Altima’s Recommended Tire Pressure
Maintaining the correct tire pressure in your Nissan Altima is not merely a routine check; it’s a cornerstone of vehicle safety, optimal fuel efficiency, and responsive handling. Proper inflation ensures that your Altima performs as intended, delivering a safe and enjoyable driving experience. This section will explore why tire pressure is so crucial and how to pinpoint the precise pressure tailored to your specific Altima model.
The Tire Placard and Owner’s Manual: Your Primary Resources
The most authoritative sources for your Altima’s recommended tire pressure are the Tire Placard and the Owner’s Manual.
The Tire Placard is typically located on the driver’s side door jamb. This label provides the manufacturer’s recommended cold tire pressure, which is the pressure you should aim for when the tires are cool – ideally before driving or after the vehicle has been stationary for several hours.
The Owner’s Manual serves as another vital resource. It offers comprehensive information about your vehicle, including tire specifications and pressure recommendations. Always consult both the Tire Placard and the Owner’s Manual to ensure you have the most accurate and complete information. Discrepancies are rare but possible; in such cases, prioritize the Tire Placard.
Understanding Cold vs. Hot Tire Pressure
A critical distinction to understand is the difference between cold and hot tire pressure.
Cold tire pressure refers to the pressure of your tires when they are cool, before driving or after the vehicle has been parked for an extended period. This is the pressure specified on the Tire Placard.
As you drive, the tires heat up due to friction, causing the air inside to expand. This results in an increase in tire pressure, known as hot tire pressure.
Never bleed air from a hot tire to reduce the pressure to the recommended cold tire pressure. This is because as the tire cools, the pressure will drop below the recommended level, leading to underinflation. Always check and adjust tire pressure when the tires are cold for the most accurate results.
Interpreting Tire Specifications: Load Index and Speed Rating
Beyond the recommended pressure, it’s essential to understand tire specifications such as the Load Index and Speed Rating.
The Load Index is a numerical code that indicates the maximum weight each tire can carry when properly inflated. This number is critical for safety and should never be exceeded.
The Speed Rating signifies the maximum speed a tire can sustain for a specific period under a standard load. While exceeding the speed rating might seem inconsequential, it can lead to tire failure, especially during prolonged high-speed driving.
Consult your Owner’s Manual or a tire professional to ensure that the tires you are using meet or exceed the original specifications for your Altima model. Maintaining correct tire pressure, in conjunction with adhering to load and speed ratings, contributes significantly to overall vehicle safety and performance.
Key Components: Understanding the System
Decoding your Nissan Altima’s recommended tire pressure is only the first step; a complete understanding of the system’s key components is crucial for maintaining optimal tire health and safety. These components work in concert to ensure your Altima handles predictably, efficiently, and safely.
The Tire: The Foundation of Performance
The tire itself is the most critical component, acting as the direct interface between your Altima and the road. Maintaining the correct pressure is paramount for optimal performance, safety, and longevity.
Different tire types, such as all-season and winter tires, have varying pressure sensitivities.
-
All-Season Tires: Designed for a balance of performance in various conditions, maintaining the recommended pressure ensures optimal grip, tread wear, and fuel efficiency.
-
Winter Tires: Winter tires often have slightly different pressure requirements to maximize grip on snow and ice. Consulting your tire technician or owner’s manual is critical.
TPMS: Your Electronic Safety Guardian
The Tire Pressure Monitoring System (TPMS) is an electronic safety feature designed to alert you when tire pressure drops below a certain threshold.
It’s important to understand how TPMS works and what to do when an alert is triggered.
Ignoring TPMS alerts can have serious consequences, including increased risk of tire failure, reduced fuel efficiency, and compromised handling.
If the TPMS light illuminates, immediately check the pressure of all tires, including the spare (if applicable). Inflate any tires below the recommended pressure to the specified level.
If the light persists, consult a qualified technician, as it may indicate a TPMS malfunction or a slow leak.
The Humble Valve Stem: An Often-Overlooked Hero
The valve stem, though small, plays a vital role in maintaining tire pressure. It allows air to enter and exit the tire and seals the air within.
During routine tire maintenance, inspect the valve stem for cracks, damage, or corrosion. A damaged valve stem can lead to slow leaks, causing gradual pressure loss.
Consider replacing valve stems during tire changes to ensure a proper seal and prevent future issues.
The Spare Tire: Your Emergency Backup
The spare tire is a critical safety component, providing a temporary solution in the event of a flat tire. However, its pressure requirements are often overlooked.
Always ensure your spare tire is inflated to the pressure specified on its sidewall or in your owner’s manual.
Spare tires typically require a higher inflation pressure than regular tires.
Furthermore, understand the limitations of your spare tire.
Many modern vehicles come equipped with temporary or "donut" spares, which are designed for limited use at reduced speeds.
Refer to your owner’s manual for specific instructions and limitations regarding your spare tire.
Wheels and Rims: The Foundation’s Support
While not directly related to pressure, the wheels and rims play an integral role in overall tire health and safety.
Regularly inspect your wheels and rims for signs of damage, such as bends, cracks, or corrosion. These issues can compromise the tire’s seal, leading to pressure loss and potential tire failure.
If you notice any damage, consult a qualified technician for repair or replacement.
Tools and Techniques: Checking and Adjusting Tire Pressure
Decoding your Nissan Altima’s recommended tire pressure is only the first step; a complete understanding of the system’s key components is crucial for maintaining optimal tire health and safety. These components work in concert to ensure your Altima handles predictably, efficiently, and safely.
Regular tire pressure checks and adjustments are essential to ensure optimal safety, fuel efficiency, and tire longevity for your Nissan Altima. Knowing the proper tools and techniques empowers you to maintain your tires proactively.
Essential Tools for Tire Pressure Maintenance
Two primary tools are required for checking and adjusting tire pressure: a reliable tire pressure gauge and an air compressor or tire inflator.
Tire Pressure Gauges: Analog vs. Digital
Tire pressure gauges come in two main varieties: analog and digital.
Analog gauges are generally less expensive and operate mechanically. Their accuracy can vary, and they can be harder to read precisely.
Digital gauges offer increased precision and ease of use, displaying the pressure reading on a digital screen. While more expensive, their accuracy and readability make them a worthwhile investment. Always ensure the gauge is properly calibrated for accurate readings.
Air Compressors and Tire Inflators: Portable and Stationary Options
An air compressor or tire inflator is necessary to add air to your tires. Several options are available, each with its pros and cons.
Portable tire inflators that plug into your car’s 12V outlet are convenient for roadside emergencies. However, they can be slow and may not be suitable for inflating tires from a very low pressure.
Stationary air compressors offer more power and are ideal for home use. They typically require a power outlet and can inflate tires quickly.
Consider investing in a compressor with an automatic shut-off feature to prevent overinflation.
Step-by-Step Guide: Checking and Adjusting Tire Pressure
Follow these steps to check and adjust your Nissan Altima’s tire pressure accurately:
- Gather Your Tools: Have your tire pressure gauge and air compressor/inflator readily available.
- Locate the Valve Stem: Remove the valve stem cap from the tire you’re checking. Store the cap in a safe place to prevent loss.
- Check the Pressure: Press the tire pressure gauge firmly onto the valve stem, ensuring a tight seal to get an accurate reading. Note the reading displayed on the gauge.
- Compare to Recommended Pressure: Compare the reading to the recommended tire pressure listed on the tire placard (driver’s side door jamb) or in your owner’s manual. Remember this is the recommended cold tire pressure.
- Adjust as Needed:
- If the pressure is too high, gently press the valve core with the back of the pressure gauge to release air until you reach the recommended pressure. Recheck the pressure frequently as you release air.
- If the pressure is too low, attach the air compressor/inflator to the valve stem and add air in short bursts. Check the pressure frequently until you reach the recommended level.
- Replace the Valve Stem Cap: Once the pressure is correct, replace the valve stem cap securely to prevent dirt and moisture from entering the valve.
- Repeat for All Tires: Repeat the process for all four tires, including the spare tire if applicable.
Avoiding Overinflation and Underinflation: A Word of Caution
Maintaining the correct tire pressure is a balancing act. Overinflation and underinflation are equally detrimental to your Nissan Altima’s performance and safety.
Overinflation reduces the contact patch between the tire and the road, leading to reduced traction, uneven wear, and a harsher ride.
Underinflation increases rolling resistance, leading to reduced fuel efficiency, increased tire wear on the edges, and a higher risk of tire failure due to heat buildup. Always adhere to the recommended cold tire pressure.
Where to Find Inflation Services: Public and Professional Options
If you don’t have your own air compressor, you can usually find inflation services at gas stations or service stations. Many offer free air, while others may charge a small fee.
Tire shops and automotive repair shops also offer professional tire inflation services.
- Gas Stations/Service Stations: A readily accessible but often less precise solution. Public air pumps can be unreliable.
- Tire Shops/Automotive Repair Shops: Offer precise inflation using calibrated equipment. Technicians can also inspect your tires for damage or wear. Consider the potential benefits of professional services, including expert advice and tire inspection.
The Ripple Effect: Consequences of Improper Tire Pressure
Decoding your Nissan Altima’s recommended tire pressure is only the first step; a complete understanding of the system’s key components is crucial for maintaining optimal tire health and safety. Driving on tires inflated to the wrong pressure is not merely an inconvenience; it triggers a cascade of negative consequences that affect safety, vehicle performance, and the lifespan of your tires. Ignoring this fundamental aspect of vehicle maintenance can lead to diminished fuel efficiency, compromised handling, and, in extreme cases, catastrophic tire failure.
The Perils of Underinflation
Underinflation, a common yet often overlooked issue, presents a multitude of risks to Nissan Altima drivers. When a tire is underinflated, a larger portion of its surface area comes into contact with the road. This seemingly minor change has significant repercussions.
Accelerated Tire Wear
The increased friction from a larger contact patch leads to accelerated tire wear. Specifically, the outer edges of the tire will wear down more rapidly than the center. This uneven wear pattern shortens the tire’s lifespan and necessitates premature replacement.
Fuel Efficiency/Gas Mileage Decline
Underinflated tires increase rolling resistance, forcing the engine to work harder to maintain speed. This added strain directly translates into reduced fuel efficiency. Drivers can expect to see a noticeable dip in gas mileage, adding to their operating costs.
Compromised Handling and Stability
A properly inflated tire provides optimal grip and stability. Underinflation diminishes these critical handling characteristics. Steering response becomes sluggish, cornering ability is reduced, and the vehicle may feel unstable, particularly during emergency maneuvers.
Elevated Heat Buildup and Tire Failure
The excessive flexing of an underinflated tire generates significant heat. This heat buildup can weaken the tire’s structure, increasing the risk of a blowout, especially during high-speed driving or in hot weather conditions. Tire failure can lead to loss of control and potentially serious accidents.
The Drawbacks of Overinflation
While less common than underinflation, overinflation is equally detrimental to your Nissan Altima’s performance and safety.
Reduced Traction and Grip
Overinflated tires have a smaller contact patch with the road, which reduces traction and grip. This is particularly noticeable in wet or slippery conditions. Reduced grip can compromise braking performance and increase the risk of skidding.
Uneven Wear Pattern
Overinflation causes the center of the tire to bear the brunt of the vehicle’s weight. This leads to premature wear in the center of the tire, while the outer edges remain relatively unworn.
A Harsher, Less Comfortable Ride
An overinflated tire is less able to absorb bumps and irregularities in the road surface. This translates into a harsher, less comfortable ride for both the driver and passengers. The increased stiffness can also put additional stress on the vehicle’s suspension components.
Rolling Resistance and Overall Vehicle Efficiency
Improper tire pressure, whether too high or too low, dramatically impacts a vehicle’s rolling resistance. Rolling resistance is the force that opposes the motion of a tire as it rolls across a surface. Higher rolling resistance translates to increased fuel consumption.
Maintaining the correct tire pressure minimizes rolling resistance, allowing the engine to operate more efficiently and improve overall fuel economy. It’s a simple adjustment that yields significant benefits over the long term.
Best Practices: Maintaining Optimal Tire Health
[The Ripple Effect: Consequences of Improper Tire Pressure
Decoding your Nissan Altima’s recommended tire pressure is only the first step; a complete understanding of the system’s key components is crucial for maintaining optimal tire health and safety. Driving on tires inflated to the wrong pressure is not merely an inconvenience; it triggers a cascade…]
Maintaining optimal tire health isn’t a one-time chore but an ongoing commitment. It demands a proactive approach, encompassing regular checks, keen observation, and an understanding of the factors that influence tire pressure. Neglecting these best practices can lead to premature wear, compromised handling, and, most critically, safety risks. Let’s delve into the essential habits that will ensure your Altima’s tires remain in peak condition.
The Importance of Regular Tire Pressure Checks
The cornerstone of tire health is consistent monitoring. Ideally, tire pressure should be checked at least once a month, and before any long journeys.
This frequency allows you to catch slow leaks or gradual pressure changes before they escalate into significant issues.
Consistency is paramount because tire pressure naturally fluctuates due to ambient temperature changes, driving conditions, and even the passage of time. A seemingly minor pressure drop can, over time, snowball into a safety hazard.
Decoding Tire Wear: Recognizing Warning Signs
Beyond pressure, visual inspection of your tires is equally crucial.
Regularly examine the tire tread for signs of uneven wear.
Is the center wearing out faster than the edges? This could indicate overinflation.
Are the edges worn down more than the center? Underinflation might be the culprit.
Cupping, feathering, or unusual bulges are all red flags that warrant immediate professional attention. Don’t dismiss these signs as mere cosmetic issues; they often point to underlying mechanical problems with your suspension or alignment that need to be addressed to prevent further tire damage and ensure safe handling. Ignoring these warnings is akin to ignoring a persistent engine knock – it will only worsen with time.
Environmental Factors and Pressure Adjustments
Environmental factors, most notably temperature, exert a significant influence on tire pressure.
As temperatures drop, tire pressure decreases, and vice versa. For every 10-degree Fahrenheit change in temperature, tire pressure can fluctuate by approximately 1 PSI.
This means that as the seasons change, adjustments to your tire pressure may be necessary to maintain the optimal level. It’s best to check tire pressure in the morning before the tires have heated up from driving. Remember, the recommended pressure listed on the tire placard is for cold tires.
The Owner’s Responsibility: A Proactive Approach
Ultimately, the responsibility for maintaining proper tire inflation and overall tire health rests with the vehicle owner/driver.
This means not only checking tire pressure and monitoring tire wear but also understanding the recommendations provided by Nissan and adhering to established safety guidelines.
It also means being proactive in addressing any potential issues, whether it’s seeking professional assistance for an unusual tire wear pattern or promptly repairing a slow leak.
By embracing this proactive approach, you’ll not only extend the life of your tires but also enhance the safety, efficiency, and overall driving experience of your Nissan Altima. Tire maintenance, when approached with diligence, transforms from a mundane task into an investment in your vehicle’s longevity and your peace of mind.
[Best Practices: Maintaining Optimal Tire Health
[The Ripple Effect: Consequences of Improper Tire Pressure
Decoding your Nissan Altima’s recommended tire pressure is only the first step; a complete understanding of the system’s key components is crucial for maintaining optimal tire health and safety. Driving on tires inflated to the wrong pressure…]
Understanding the Standards: Regulatory and Industry Oversight
Maintaining proper tire pressure isn’t just about individual responsibility. A comprehensive framework of regulatory and industry standards is in place, designed to ensure vehicle safety and performance. These standards are shaped and enforced by organizations such as the National Highway Traffic Safety Administration (NHTSA) and are further refined through the actions of vehicle manufacturers like Nissan.
The Role of the National Highway Traffic Safety Administration (NHTSA)
The National Highway Traffic Safety Administration (NHTSA) plays a pivotal role in establishing and enforcing tire safety standards across the United States. As a federal agency, NHTSA is responsible for reducing deaths, injuries, and economic losses resulting from motor vehicle crashes.
One of NHTSA’s key responsibilities is to set and enforce Federal Motor Vehicle Safety Standards (FMVSS). These standards cover a wide range of vehicle safety aspects, including tire performance, labeling, and TPMS requirements.
NHTSA’s regulations aim to ensure that all tires sold in the U.S. meet minimum safety requirements. These regulations include tests for tire strength, endurance, and high-speed performance. Tire manufacturers are required to certify that their products comply with these standards.
Furthermore, NHTSA mandates the use of Tire Pressure Monitoring Systems (TPMS) in passenger vehicles, including the Nissan Altima. This requirement is intended to alert drivers when their tires are significantly underinflated, reducing the risk of accidents.
While NHTSA sets the baseline for tire safety, compliance is not always perfect. There have been instances of tire recalls due to manufacturing defects or non-compliance with safety standards.
NHTSA’s oversight is critical for ensuring a baseline level of safety for all drivers. However, it’s important to recognize that these standards represent a minimum, and individual drivers should always prioritize proper tire maintenance.
The Role of Vehicle Manufacturers (Nissan)
Vehicle manufacturers like Nissan also play a crucial role in ensuring tire safety. While NHTSA sets the overall standards, manufacturers have the responsibility of integrating these standards into the design and engineering of their vehicles.
Nissan determines the recommended tire pressures for its vehicles. These recommendations are based on extensive testing and are tailored to the specific characteristics of each model, including the Altima. These recommendations can be found on the tire placard (usually located on the driver’s side door jamb) and in the owner’s manual.
Vehicle manufacturers are also responsible for implementing TPMS technology in their vehicles. Nissan, like other manufacturers, has integrated TPMS into the Altima’s electronic systems, providing drivers with real-time tire pressure information.
The effectiveness of TPMS depends on its proper functioning. Nissan provides guidance on how to interpret TPMS alerts and what actions to take when a warning is triggered.
While manufacturers like Nissan strive to meet and exceed safety standards, it’s essential for owners to understand that TPMS is not a substitute for regular tire inspections and maintenance. Drivers must remain vigilant and proactively monitor their tire pressure and condition.
Seeking Expert Advice: When to Consult a Professional
Decoding your Nissan Altima’s recommended tire pressure is only the first step; a complete understanding of the system’s key components is crucial for maintaining optimal tire health and safety. Driving on tires inflated to the wrong pressure, neglecting regular inspections, or attempting DIY repairs beyond your expertise can lead to more significant problems. Knowing when to seek professional assistance is not a sign of incompetence, but rather a demonstration of responsible vehicle ownership.
Recognizing the Need for Professional Intervention
While routine tire pressure checks and adjustments can be handled at home, several scenarios warrant the expertise of a qualified mechanic or automotive technician. These situations often involve complex issues or potential safety hazards that require specialized knowledge and equipment.
Irregular Tire Wear: Uneven wear patterns, such as excessive wear on the edges or center of the tire, can indicate alignment issues, suspension problems, or incorrect inflation habits. A professional inspection can diagnose the root cause and recommend appropriate repairs, preventing premature tire replacement and ensuring safe handling.
Persistent TPMS Warnings: If your Altima’s Tire Pressure Monitoring System (TPMS) light remains illuminated despite your efforts to inflate the tires to the correct pressure, it could signal a faulty sensor, a system malfunction, or even a slow leak that is difficult to detect. A technician can diagnose the TPMS and any leaks, ensuring the system functions correctly.
Tire Damage: Visible tire damage, such as cuts, bulges, or sidewall cracks, compromises the tire’s structural integrity and increases the risk of a blowout. These types of damage demand immediate professional attention. Do not attempt to repair a damaged tire yourself, as this could lead to catastrophic failure. A qualified tire technician can assess the damage and advise on whether a repair is possible or if a replacement is necessary.
Vibrations or Handling Issues: Unusual vibrations, pulling to one side, or difficulty steering can often be traced back to tire-related problems, such as imbalanced tires, damaged wheels, or suspension issues. A mechanic can perform a thorough inspection to identify the cause of the handling problems and recommend the necessary repairs.
Leveraging the Expertise of a Service Advisor
Beyond mechanical repairs, consulting with a service advisor at your local Nissan dealership or reputable automotive repair shop can be invaluable for proactive tire maintenance.
Maintenance Schedules: Service advisors can provide you with the manufacturer’s recommended maintenance schedule for your Altima’s tires, including rotation intervals, balance checks, and alignment services. Following these schedules helps maximize tire life and maintain optimal performance.
Tire Selection: Choosing the right tires for your Altima depends on your driving habits, local weather conditions, and personal preferences. A service advisor can guide you through the available options, explaining the pros and cons of different tire types and helping you select tires that meet your specific needs.
Addressing Concerns: If you have any questions or concerns about your Altima’s tires, a service advisor can provide expert advice and address your inquiries. They can also help you understand warranty information and navigate any potential claims.
Long-Term Tire Care: Service advisors can help you create a long-term tire care plan to ensure you achieve the maximum lifespan out of your tires. This can include personalized advice, customized maintenance schedule, and answering any tire-related questions.
Ultimately, entrusting tire-related concerns to skilled experts assures safety, extends tire lifespan, and preserves optimal performance for your Nissan Altima.
FAQs: Nissan Altima Tire Pressure
Where can I find the correct tire pressure for my Nissan Altima?
The recommended tire pressure for your Nissan Altima is usually located on a sticker on the driver’s side doorjamb. You can also find it in your owner’s manual. This sticker indicates the proper tire pressure on Nissan Altima models, usually expressed in PSI (pounds per square inch).
Why is maintaining the correct tire pressure important for my Altima?
Maintaining the correct tire pressure is crucial for safety, fuel efficiency, and tire longevity. Underinflated tires can lead to poor handling, increased stopping distance, and premature wear. The recommended tire pressure on Nissan Altima helps maximize performance and safety.
How often should I check the tire pressure on my Nissan Altima?
You should check your Nissan Altima tire pressure at least once a month and before any long trips. Temperature changes can affect tire pressure, so it’s especially important to check it during colder months. Consistent monitoring ensures you have the optimal tire pressure on Nissan Altima at all times.
What type of tire pressure gauge should I use to check the tire pressure on my Altima?
A reliable digital or analog tire pressure gauge is recommended. Avoid using gauges at gas stations, as they can often be inaccurate. Using your own quality gauge will help you ensure you’re getting an accurate reading for the correct tire pressure on Nissan Altima, leading to safer driving.
Alright, that pretty much covers everything you need to know about keeping the tire pressure on your Nissan Altima just right. Remember, it’s a small thing that makes a big difference for safety, fuel economy, and how long your tires last! Safe driving out there!
