i know this was talked about before, forgive me, i cant find it, but...

i just checked my tires and i got 4 diff pressures from 34 to 44 psi. what is the best pressure for these tires (pzero stock SS/SC) for spirited and normal driving?? the tires where also cold, had not been driven on, so the pressures where cold. thanks for all input.

 

Check the inside of the driver side door well, there is a sticker that tells you normal inflation pressure. If you look in the owners manual it specifically states to add about 3 psi for extended periods of high speed driving. I forget the exact figures but I think the normal pressure is 32psi.

 

yes, thanks, i knew that, but these tires are supposed to be able to inflate up to 50 psi. is there any advantage to gas milage, tire wear or performance to go up in tire pressures. just was wanting to know what some of the more performance minded people on this board thought, i thought this was talked about before....

 

My tires looked low. Checked and they were all between 20 and 30 lbs.
I put them at 50 lbs (recomended max) and woohoo! Much better!

 

i'd keep it below 40. Hit a chuck hole and say good bye to that low profile tire. The tires need some give, otherwise they explode.

 

Always follow the manufacturer recommended pressures inside the door, they take into account the mass of the vehicle and it's handling charateristics. Some vehicles even have different pressures for front and rear for vehicles with very uneven weight distribution.

The pressure rating on the sidewall of the tire is the tire manufacturer's maximum recommended inflation pressure rating and is not normally the car manufacturers recommendation.

By exceeding the manufacturers recommendations you will probably find that the center of your tires will wear out faster than the outter sections. This happens because the mass of the vehicle is such that the center of the tire is bulging out. Because of this you are actually reducing the effective traction of the tire by reducing the contact area with the road.

 

thanks for the input, think i'll keep about 38 see how that works then maybe try 40. i see ur point with the need for the tires to give.

 

Inflating them past 32 psi (rec. spec) and you're asking for a blown tire or severely bad wear. You've been warned lol. I keep em at 32 psi for daily driving and drop em to 25 psi at the strip