Tire pressure is suppose to be 35psi. What psi is too high and should I keep it below 35psi?

Set the pressure when the vehicle is “cold” meaning not just driven. You don’t have to worry about a few added PSI. The Tires can add a few PSI normally from changes in temperature and from the heat added by driving. If you are asking how high you can set the PSI above the vehicle’s door stamp, I wo…

If you set the tire pressure correctly when cold, it will go higher when hot, after driving. Do NOT let any air out of the tire. The recommended pressure applies to the ‘cold’ measurement.

I agree with everything that has been said. I like to keep mine a pound or two above the spec: it gives me some leeway if a leak develops. Note it is fall now. Temperatures will be falling. This will cause your tire pressure to drop. You will need to add more as the weather cools–just set it where…

The pressure gauge is probably accurate only to +/- 1 o 2 psi, so within that range of the spec seems like you should be ok.

To answer the question: How much pressure is too much? As a tire engineer, the practical answer is you can use as high as 5 psi more than the placard states (assuming the tire size is the same as the placard.) In theory, the max cold pressure is what is written on the sidewall, but anything above…

[image] Purebred: Going outside of manufacturers guidelines can affect handling, tire wear, and fuel economy. I’ve added up some air into my hybrid Accord over this weekend, it was 31.5psi with 33.0psi recommended. Somehow my commute MPG went from 42 to 44 right away. Even a little bit low …

[image] thegreendrag0n: I’ve added up some air into my hybrid Accord over this weekend, it was 31.5psi with 33.0psi recommended. Somehow my commute MPG went from 42 to 44 right away. Even a little bit low on air can affect MPG in a noticeable way. I’ve noticed that on my MKZ hybrid, sure si…

My commute is 11 miles and only after 3-4 miles the MPG settles to reasonable, first miles it is under 25. I happened to drive around 60 mile to the national park next to me and back the other week, 65-75 MPH and my MPG was in 51-52 MPG range, even with low tires :slight_smile: Also, I noticed tha…

2017 Kia Sportage - Pressure in tires

Maintenance/Repairs

Purebred September 10, 2019, 10:43am 2

If the placard on the door jam or your owners manual states 35 PSI the car will perform best at 35 PSI, one or two PSI above or below should be okay. Going outside of manufacturers guidelines can affect handling, tire wear, and fuel economy.

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