The tire pressure is printed on the sidewall of the tire itself, but that number is not what you should use
Every tire has its maximum pressure rating stamped into the rubber on the sidewall — the vertical part of the tire between the rim and the tread. You will see "MAX PRESSURE" followed by a number in PSI (pounds per square inch), often in the range of 44 to 51 PSI for a standard passenger car tire. This is the absolute ceiling the tire can safely hold, not the pressure you should actually run your vehicle at.
The pressure you should use is different. It comes from your vehicle manufacturer, not the tire maker, and it appears in three places: the driver's door jamb (the edge of the door frame when you open the door), the fuel door, or your owner's manual. This manufacturer pressure is always lower than the tire's maximum rating — typically 28 to 35 PSI for most cars — and it accounts for your vehicle's weight, suspension, and handling characteristics.
Using the tire's maximum pressure instead of the manufacturer's pressure will make your ride harsh, wear the center of the tire faster, and reduce traction. Using pressure that is too low will overheat the tire and waste fuel. The manufacturer's number is the one that matters.
Key Takeaways
- The tire sidewall shows the maximum pressure the tire can hold, not the pressure your vehicle needs.
- Your vehicle's correct tire pressure is printed on a sticker inside the driver's door jamb or fuel door, or in your owner's manual.
- Manufacturer pressure is always lower than the tire's maximum rating and is the number you should use when inflating.
- Checking pressure when the tire is cold (before driving or at least three hours after driving) gives you the most accurate reading.
How to read the sidewall pressure marking
The maximum pressure marking on the tire sidewall is usually printed near the bottom edge of the tire, often in white lettering. It will say "MAX PRESSURE" or sometimes just "MAX PSI" followed by a number. On some tires, especially older ones, you may see it printed as "MAX LOAD" with both a weight and a pressure figure — the pressure is what you need.
The sidewall also contains other information: the tire size (like 225/65R17), the load index, the speed rating, the manufacturing date, and tread wear warranty information. The maximum pressure is distinct from all of these. If you cannot find it on the sidewall you are looking at, rotate the tire or check the opposite sidewall — manufacturers print it on both sides.
Where the manufacturer pressure is located on your vehicle
Open your driver's side door and look at the door jamb — the vertical frame that the door closes against. You will see a white or silver sticker, usually 3 to 4 inches tall, with vehicle information printed on it. This sticker shows the correct tire pressure for your vehicle, listed as "TIRE PRESSURE" or "RECOMMENDED TIRE PRESSURE" with separate numbers for the front and rear tires. Some vehicles have the same pressure front and rear; others differ by 2 to 4 PSI.
If you cannot find the sticker on the door jamb, check the fuel door (the panel that covers your gas cap). Some manufacturers place the tire pressure information there instead. If it is not on either location, open your owner's manual and search the index for "tire pressure" or "inflation." The manual will have a page dedicated to tire maintenance that lists the correct pressure.
Write down both the front and rear tire pressures and keep them in your phone or glove box. You will need them every time you check or inflate your tires.
Why the tire maximum and vehicle manufacturer pressure are different
A tire's maximum pressure is set by the tire manufacturer based on the tire's construction and materials — how much air pressure the rubber and internal structure can safely contain without failing. This is a safety ceiling, not a recommendation.
Your vehicle's manufacturer sets a lower pressure based on how much weight the vehicle carries, how the suspension is tuned, and what handling and fuel economy the engineers designed for. A heavier vehicle or a truck may have a higher recommended pressure than a light sedan, even if both use tires with the same maximum rating. The vehicle pressure is the one that balances safety, comfort, tire wear, and fuel efficiency for your specific car.
Running your tires at the maximum pressure will make them last longer in terms of total miles, but it will wear the center of the tread faster and make the ride noticeably stiffer. It can also reduce grip in wet conditions. The manufacturer's pressure is the correct choice for normal driving.
How to check your tire pressure accurately
You will need a tire pressure gauge, which costs between $10 and $30 and is available at any auto parts store or online. Digital gauges are easier to read than analog stick gauges, but both work. You also need access to an air pump — most gas stations have one, and many tire shops will check and adjust pressure for free.
Check your tire pressure when the tires are cold: either before you drive in the morning, or at least three hours after you have finished driving. Driving heats the tires and raises the pressure inside them, giving you a false high reading. Remove the valve cap from the tire (the small plastic or metal cap on the wheel), press the gauge firmly onto the valve stem, and read the number. Do this for all four tires, including the spare if your vehicle has a full-size spare.
If the pressure is low, drive to a gas station or tire shop and add air until you reach the manufacturer's recommended pressure. If the pressure is high, you can release air by pressing the small pin inside the valve stem with a small tool or the back of your gauge. Check the pressure again after adjusting to make sure you are at the target.
Seasonal changes and tire pressure
Tire pressure changes with temperature. In cold weather, the air inside the tire contracts and pressure drops — you may lose 1 PSI for every 10 degrees Fahrenheit the temperature falls. In hot weather, pressure rises. This means you may need to add air in winter and release a small amount in summer to stay at the manufacturer's recommended pressure.
Check your tire pressure at least once a month, and always check it when the season changes or if you notice the tire looks flatter than usual. Many modern vehicles have a tire pressure monitoring system (TPMS) that alerts you on the dashboard when pressure is low, but this system typically only warns you when pressure drops significantly — not when it is slightly off target.
What happens if you use the wrong pressure
Running tires at the maximum pressure instead of the manufacturer's pressure will cause the center of the tread to wear faster than the edges, shortening tire life. The ride will feel harsh and bouncy, and you will have less grip in wet conditions because less of the tire surface contacts the road.
Running tires at pressure that is too low causes the edges of the tread to wear faster, generates excess heat, and wastes fuel. Severely underinflated tires can fail suddenly, especially on highway driving. Most tire shops recommend checking pressure monthly and before long trips to catch problems early.
Frequently Asked Questions
Can I use the tire pressure number on the tire sidewall instead of the manufacturer's number?
No. The sidewall number is the maximum the tire can hold safely, not the pressure your vehicle needs. Using it will make your ride harsh, wear the tire unevenly, and reduce traction. Always use the manufacturer's number from your door jamb or owner's manual.
What if my front and rear tire pressures are different?
Many vehicles have different recommended pressures for front and rear tires — the sticker on your door jamb will show both. Inflate each tire to its correct pressure. Do not use the same pressure for all four tires unless the sticker says they are the same.
How often should I check my tire pressure?
Check at least once a month and before any long trip. Cold weather and seasonal changes also affect pressure, so check when temperatures drop or rise significantly. A tire pressure monitoring system will alert you to large drops, but it does not replace regular manual checks.
Is it okay to inflate my tires to a higher pressure for better fuel economy?
No. Overinflating reduces traction, makes the ride harsh, and wears the tire unevenly. The manufacturer's pressure is already optimized for fuel economy. Exceeding it gains little and creates safety and handling problems.
What should I do if I cannot find the manufacturer pressure sticker on my vehicle?
Check the fuel door and both door jambs. If it is not there, open your owner's manual and look for the tire maintenance section — it will have the correct pressure listed. You can also call your vehicle's dealership with your vehicle identification number (VIN) and they will tell you the correct pressure.