The right pressure for your electric car is the one printed on the tire information placard in the driver’s door jamb (or in the owner’s manual), not the number molded into the tire’s sidewall. Beyond that, Michelin and an SAE paper both link under-inflation to higher rolling resistance, and fueleconomy.gov ties it to lower gas mileage. This guide explains where to find the number, how often to check it and what the evidence says about range, with the limits of each source.
Where do you find the correct EV tire pressure?
The U.S. Department of Energy and EPA site fueleconomy.gov says the proper pressure “is usually found on a sticker in the driver’s side door jamb or the glove box and in your owner’s manual,” and warns: “Do not use the maximum pressure printed on the tire’s sidewall” (fueleconomy.gov; the page is written for gasoline vehicles and is undated). Michelin also points to the driver’s side door jamb and adds that on some vehicles the placard is “inside the fuel filler flap” (Michelin USA tire pressure guide; Michelin is a tire maker).
We found no source we could cite for a different, higher pressure for EVs, so use the number your car’s maker specifies on the placard or in the manual.
How often should you check it?
Michelin recommends checking “at least once a month and before any long trip,” and says temperature changes shift pressure, so seasonal transitions are important times to check. It also warns not to wait for the warning light: “by the time it activates, the pressure has already dropped significantly.” A separate SAE paper (below) makes a similar point: its authors say pressure warnings trigger at more than 20% under-inflation.
How does tire pressure affect range?
Michelin states that “underinflated tires have more rolling resistance than correctly inflated ones,” without giving figures. Two sources put numbers on it, with limits:
- Gasoline cars (DOE/EPA). Correct pressure can improve gas mileage “0.6% on average—up to 3% in some cases,” and under-inflated tires can lower it “by about 0.2% for every 1 psi drop” in average pressure. This is for fuel economy in combustion vehicles; it does not measure EV range.
- An EV simulation (SAE, 2020). Researchers from Geely, LingLong Tire and ExxonMobil Chemical compared four identical 215/50R17 tires differing only in their inner liner (composition and thickness), which controls how fast air leaks out. Projecting real-world loss with a factor taken from earlier ExxonMobil Chemical studies that we could not verify, the simulated range loss over six months was 16 km with the leakiest liner against 7 km with the best, on a 360 km baseline. They write that a variable tire RRC (rolling resistance coefficient) “could account for up to 4% battery-charge difference.” This is a simulation, not a road test of owners’ cars, and ExxonMobil sells the polymer used in the best-performing liner (SAE abstract; the figures come from the full text hosted by ExxonMobil Chemical).
In short, pressure matters for range, but we cannot promise a specific percentage for your car.
Does tire pressure change how fast tires wear?
Our sources did not measure this, so we make no claim about it. For what is known about EV tire wear in general, see Why Do EV Tires Wear Out Faster? and Electric Car Tires: How They Differ and What to Check.
Frequently asked questions
What is the ideal tire pressure for an electric car?
The one on your car’s door-jamb placard or in the owner’s manual.
Can I use the pressure printed on the tire sidewall?
No. Both fueleconomy.gov and Michelin say that number is not the recommended pressure for your vehicle.
How often should I check?
Michelin says at least monthly and before long trips.
Will the warning light tell me in time?
Michelin says the light comes on after the pressure has already dropped significantly, and the SAE authors say such warnings trigger at more than 20% under-inflation.
Sources read on 2026-11-06: fueleconomy.gov (DOE/EPA, undated), Michelin USA tire pressure guide (guide and FAQ only; undated) and the SAE/Mobility Engineering article by Tang et al. (2020; full text via the ExxonMobil Chemical copy, which is a conflict of interest).