Published by Rims & Tires
Compiled & checked by the site's publisher from manufacturer, NHTSA & USTMA data · Updated 2026-08-01
Your correct tire pressure is printed on a sticker inside the driver's door jamb, not on the tire sidewall. For most passenger cars it's 32–36 PSI. Trucks and SUVs usually run 35–44 PSI, often higher in the rear if you're loaded or towing. That door-jamb number is the one to follow — not the "MAX" figure molded into the tire itself.
Where do you find your correct tire pressure?
The door-jamb sticker (or owner's manual) lists the OEM-recommended cold inflation pressure for front and rear, and it's sometimes different on each axle. This is the number your vehicle was engineered for: best fuel economy, even tread wear, and safe handling.
The "MAX PRESS" number on the tire sidewall is the tire's structural limit, not a target. Running at that number typically gives a harsh ride, reduced traction, and abnormal center-tread wear.
Why does tire pressure matter so much?
Under-inflation is the leading cause of tire damage and blowouts. A tire just 6 PSI low runs hotter, wears the outer edges faster, and reduces fuel economy noticeably. Long-term under-inflation can lead to internal structural damage that isn't visible from the outside.
Over-inflation produces a smaller contact patch, reduces wet grip, and wears the center of the tread faster. It also makes the ride harsher and increases the risk of damage from potholes and road debris. See our overinflated tires guide for how to spot it and let air back out, or the full over-inflated vs. under-inflated breakdown for how the two compare side by side.
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How do you check and set tire pressure correctly?
Check pressure "cold," before you've driven more than a mile or two. The U.S. Tire Manufacturers Association defines cold as parked for at least three hours, and recommends checking at least once a month. Driving warms tires fast, and pressure can rise 4–6 PSI in the process. A hot reading isn't accurate for adjustment.
Use a quality gauge (stick, dial, or digital — avoid integrated gas-station gauges which are often inaccurate). Add or release air in small increments and recheck. Don't forget the spare.
Most modern vehicles have a TPMS warning light, but don't wait for it. Under federal rule FMVSS No. 138, TPMS isn't required to trigger until pressure is already 25% below the vehicle's recommended level — well past due for a top-off by then. Check monthly instead.
Frequently asked
What PSI should my tires be?
Check the sticker inside your driver's door jamb for the exact number — usually 32–36 PSI for cars, 35–44 PSI for trucks and SUVs. That's the right target, not the MAX number printed on the tire sidewall.
How often should I check tire pressure?
Once a month and before any long trip. Tires naturally lose 1–2 PSI per month, and temperature changes affect pressure significantly — roughly 1 PSI for every 10°F change in air temperature.
Can I use the air at a gas station?
Yes, but bring your own gauge — gas station gauges are often inaccurate. Add or release air in small increments and check after each adjustment.
Do I really need to check the pressure in my spare?
If you have a full-size spare, yes. It slowly loses air sitting unused, and finding it flat the day you get a flat is a bad surprise. Check it whenever you do the other four, and any shop can top it off during a visit.
Should the front and rear tires run the same PSI?
Not always. Plenty of trucks, SUVs, and minivans list a different number for each axle on the door-jamb sticker, usually higher in the rear to handle load. Read both lines on the sticker rather than setting all four to one number, and check whether your vehicle lists a separate loaded or towing pressure.
My TPMS light is on but the tires look fine. What now?
The light means at least one tire is low, even if it looks normal to the eye. Get a gauge on all four and set them to the door-jamb number. If the light comes back within a day or two, you likely have a slow leak worth having a shop check.
Keep reading
Last updated 2026-08-01. General guidance only — confirm specifics with a local shop for your exact vehicle.