hey, i just purchased some 17's and had the tires mounted and now I'm unsure of what is the proper psi. for the stock wheels it is 32 psi but do I use the same for the 17's, or is it different depending on wheel size? i figured the place that mounted them would inflate them to the correct psi, but some of the wheels had different psi's, so i figured they are not correct. any help appreciated. thanks

 

i believe its still 32 psi

 

It should say on the sidewall of the tire...

 

sidewalls usually only tell you the max pressure (cold). i had my 225/40-18 on my accord @ 32psi, and the shoulders wore out faster, so i upped it to about 38, and the wear evened out.

 

well, you'll want a higher amount of air so you can a better cushion for your rims. I'm at 39psi on my 225/40-18, but I can now feel every ripple and bump on the road. I guess I'll probably lower it down to around 36-37 psi.

 

you do need higher psi for low pro tires. they're not like stock tires.

 

i have 225-40-18's and they are inflated at 50PSI. Whats it suppose to be? This is how the shop inflated them. Max PSI on sidewall is like 58PSI.

 

50psi cold? As in you checked it when the car has been sitting around overnight right? Even if they are warm, that's a lot? Isn't the ride too harsh?

 

ok, well they're 215-40-17s, so what do you guys suggest? 36-37 psi ?

 

well when cold it should ba at 32 but after driving around it should raise up to 34-36. Try asking tirerack or someplace like that for more info.