danclint

How much air should I put in my street tires for regular ol' street driving?

The max press is 44 psi and they fit 17" rims.

mustang8719

I keep 32 to 34 psi in my tires.

vfast

yep around 35 cold

settled4automatic

it'd be ok to go with 40 psi. and theoretically you would get better mileage with 40psi than with 32 psi, as less tire would be draggin on the ground. either way 32-40 is cool beans.

mdvaldosta

usually its around 75% of max psi

roundman

first I would tell you to check what the sticker in the door jamb says about normal tire pressures for your vehicle and use these pressures as a starting point. you might also find this information in the owner's manual. once you set a pressure, you need to monitor the tire wear pattern and adjust the pressure if the tread is not wearing evenly across the full width of the tread. if you have too much pressure, the center section of the tread will wear faster than the edges. if you are running underinflated, then the edges will wear faster than the center. it's worse to run underinflated as this builds up excess heat in the tire which breaks down the rubber sooner and worse case can cause tire failure is the heat gets to extreme. running overinflated doesn't cause this problem but it will help some with gas mileage as it reduces the rolling resistance of the tire since less of the tread is in contact with the road but this can hurt traction with the road, especially in the winter with slippery road surfaces due to snow and ice.

89stanglx

How does the door jamb know what kind of tire you are running? lol J/K I know with passanger size tire its a good rule of thumb though. I go by what the tire says. You never know, the truck i drive at work is a ford f250 2004 i dont know what the door says but the tire says 85 psi but its a 1/2 ton with a telemaintence body. I dont mean to confuse you though i just thought i would ad that. Lets just say some idiot put a passanger tire on it rated for 40 psi and the door jam said 85 can you say booom?