Maintaining the correct tire pressure is essential for safe driving and fuel efficiency. You should check your tires at least once a month and before long trips using a reliable gauge when the tires are cold. Keeping tires at the manufacturer-recommended PSI (pounds per square inch) enhances your car’s handling, braking, and fuel economy, while also extending the lifespan of your tires.
Low tire pressure is a common cause of accidents, with the National Highway Traffic Safety Administration (NHTSA) estimating that tire-related issues cause around 11,000 crashes annually. To keep your car in optimal condition and avoid costly repairs, make tire pressure a routine check.
For guidance or to explore affordable auto insurance, contact Insure on the Spot at 773-202-5060.
What Is the Recommended Tire Pressure for My Car?
The correct tire pressure for your vehicle can be found on a sticker inside the driver’s side door or in your owner’s manual. This value is specified in PSI (pounds per square inch) and is determined by the manufacturer for the best performance, safety, and tire longevity. For most passenger cars, the ideal tire pressure is usually in the range of 30-35 PSI when the tires are cold.
It’s important to follow the manufacturer’s recommendations and not inflate tires to the maximum PSI printed on the tire’s sidewall. The sidewall PSI number represents the tire’s maximum capacity, not the ideal pressure for your car. Additionally, the recommended PSI may differ between the front and rear tires or depend on your vehicle’s load.
For instance, trucks or SUVs may have different PSI requirements, particularly when carrying heavy cargo or towing a trailer.
Quick Tip:
If you’re unsure of the correct PSI, check the driver’s side door placard. It often lists the recommended PSI for both front and rear tires (e.g., 35 PSI front, 33 PSI rear). Always follow these numbers to maintain tire performance and even wear.
How Often and How Should I Check My Tire Pressure?
You should check your tire pressure at least once a month, and more frequently before long trips or significant temperature changes. Tires naturally lose air over time, about 1-2 PSI per month under normal conditions, making regular checks vital.
Steps to Check Tire Pressure:
- Check tires when cold: Ideally, measure the tire pressure after the car has been parked for at least three hours or first thing in the morning before driving. This gives the most accurate measurement since the tires have not heated up from driving.
- Locate the valve stem: Remove the valve cap carefully and keep it in a safe place.
- Press the gauge firmly: Attach your tire pressure gauge firmly onto the valve stem. You’ll hear a brief hiss of air, and the gauge will give a reading.
- Read the pressure: Compare the reading with the recommended PSI from your vehicle’s sticker or manual. If it’s lower, you need to inflate the tire.
- Repeat for all tires: Don’t forget to check all four tires and the spare (if applicable), especially since they can each have different pressures.
Why “Cold” Tires Matter:
Tires heat up as you drive, which temporarily increases the pressure. A “cold” reading, taken after the car has been parked, gives the most accurate measure of tire pressure. Driving increases the pressure by a few PSI, so avoid deflating hot tires based on this inflated reading.
How Do I Properly Inflate or Deflate My Tires?
Adjusting tire pressure is easy and can be done at most gas stations or with an air compressor at home. Follow these steps:
Inflating Underinflated Tires:
- Drive to an air pump: Most gas stations have air pumps that you can use for a small fee or for free. Ensure you have a working tire gauge with you to monitor the PSI.
- Attach the air hose: Firmly attach the air nozzle to the valve stem. Inflate in short bursts and check the tire pressure after each burst.
- Stop at the recommended PSI: Don’t overinflate. After reaching the recommended PSI, secure the valve cap back on the tire.
Deflating Overinflated Tires:
- Press the valve pin: Use a gauge or a small tool like a flat-head screwdriver to press the metal pin in the center of the valve stem. This releases air.
- Check the pressure frequently: Release air in small bursts, checking the pressure after each release, to avoid letting too much air out.
- Recheck tire pressure: Once you reach the correct PSI, put the valve cap back on.
Important Tips:
- Never release air from hot tires; their pressure will return to normal once they cool down.
- Always double-check the pressure after adjustments to ensure it meets the manufacturer’s recommendation.
How Does Weather Affect My Tire Pressure?
Temperature changes can significantly affect tire pressure. Cold weather causes pressure to drop, while heat can cause it to rise.
In Winter:
Cold weather can reduce tire pressure by 3-5 PSI. This drop can trigger your tire pressure monitoring system (TPMS) light. Check tire pressure regularly during cold weather and adjust as necessary. In some cases, your vehicle’s manual might suggest adding a few extra PSI to compensate for the cold.
In Summer:
Hot weather can increase tire pressure, especially after long drives. However, don’t deflate tires when they’re hot. Check and adjust tire pressure when the tires are cold for the most accurate reading.
Quick Tip for Winter:
Always check your tire pressure when there’s a sharp temperature drop. The change in temperature can lower the PSI, so be proactive in maintaining the correct tire pressure to avoid triggering the TPMS light.
What Are Common Mistakes to Avoid with Tire Pressure?
Relying on Visual Inspections:
Don’t assume a tire is fine just because it looks good. A tire can be underinflated by 10 PSI and still appear normal. Always use a pressure gauge to get an accurate reading.
Using Maximum PSI Instead of Recommended PSI:
Inflating to the maximum PSI on the tire’s sidewall can lead to overinflation. Always use the PSI value found on the vehicle’s placard or in the manual.
Overinflating for Performance:
Never inflate your tires beyond the recommended PSI thinking it will improve performance or gas mileage. Overinflation makes the tire too stiff, reducing traction and causing uneven tread wear.
Ignoring the Spare Tire:
Always check the pressure of your spare tire. Spare tires, especially compact ones, require higher pressure (typically around 60 PSI), and forgetting to check it could leave you stranded.
Not Re-checking After Adjustments:
After inflating or deflating your tires, double-check that the pressure is correct. It’s important to ensure all tires are balanced and set to the right pressure.
How Does Proper Tire Pressure Benefit You?
Proper tire pressure contributes significantly to your safety, vehicle performance, and savings. Here’s how:
Safety:
Maintaining the right tire pressure ensures better handling, braking, and stability, reducing the risk of accidents and blowouts. Underinflated tires are especially dangerous, increasing the likelihood of a crash.
Fuel Efficiency:
Properly inflated tires help reduce rolling resistance, improving your fuel economy. Underinflated tires waste fuel, leading to higher costs at the pump.
Tire Longevity:
Correct tire pressure ensures even wear across the tread, helping your tires last longer. Properly inflated tires are also less prone to damage from potholes or road debris.
Frequently Asked Questions About Tire Pressure
Q: What is the ideal tire pressure for my car?
A: The ideal tire pressure is the one recommended by your car’s manufacturer. You can find it in the vehicle’s manual or on the door sticker.
Q: How often should I check my tire pressure?
A: Check your tire pressure at least once a month and before long trips, especially during significant temperature changes.
Q: Should I check tire pressure when the tires are hot or cold?
A: Tire pressure should be checked when the tires are cold (after the car has been parked for at least 3 hours or overnight).
Q: What happens if I drive on underinflated tires?
A: Underinflated tires can lead to blowouts, poor handling, and reduced fuel efficiency. It also accelerates tire wear.
Q: Can overinflating tires cause problems?
A: Yes, overinflation can cause a harsh ride, reduced traction, and uneven tire wear. It can also lead to blowouts.
Get a Quote Today!
If you have any questions about tire maintenance or vehicle safety, contact Insure on the Spot at 773-202-5060 or get a free quote online to ensure your car is properly covered and maintained.