what air pressure are you guys putting in your B5 S4 tires, i'm running stock size tires and usually put 38psi all the way around, just wondering what you guys think is best

 

It depends on what you are trying to do...race or daily drive.

 

just daily driving

 

I dont have an S4 but I assume (could be wrong) that the max psi rating on your tire is 44psi. 38 seems good, just experiment yourself for a few days with different pressures. See what you like.

 

it depends on what your doing and how your loading the car up. check the fuel door for manufacturer suggestions. i think i run around 36-37 carting myself around town. race i run about 45 in the front and 47-49 in the rear.