kargo27

This is probably a very simple question but I don't know the answer to it.

I bought a set of Cooper tires for my 2002 SE and the max tire pressure on the sidewall says "51 psi max". But how much air do I put in??

These are lower profile than the OEM (and had I known that at the time, I probably wouldn't have gotten them....my speedo reads about 3 mph faster than I'm actually going).

So my question is, how many psi of air do I put in them?

Karl

mikeI302k

33 psi, but the label is under the armrest in the storage compartment on the top.

ihavea5spd

depends on what you after. i'm travelling this weekend, and i'll pump mine up to 44ish to get better mileage.

Max_Vader_2K

any where between 35-40 psi for me.

E55AMG2

iTrader: (4)

Its all tire dependent, and tire location dependent.
Also, its dependent on what you want to do with the tires. You will obviously want to put more air in the front tires than the rears (as they bear most of the load). Another thing is the type of tires, I run Pilot Sport All Seasons, and I put 42 up front, 36 in the rear. It provides for crisp handling responses and a decent ride, as well as better mileage.

Another thing, is to make sure the contact patches at all 4 corners are about the same size. If you put too little air up front, the car will plow during hard driving. Too much and you will wear the middle of the tire out too fast. The rear tires, if overinflated, will make for some crazy bump steer (another reason why i run them at a lower press than the fronts).

VMaximus02

iTrader: (1)

I had tried 40psi of hot air (about 35psi cold air) in the front and 37psi (about 32psi cold air) in the rear. I do not like how the car ride. It was way too bumpy and the steering was not precise. I went back to 34psi(cold) front and 31psi rear...the ride is much better overall, IMO.

FYI: Manufacture suggested tire pressure at 33psi front & 30psi rear no matter how high your tires are rated.

SKYRockerr

I think 34 Front, 32 Rear..

Higher PSI better gas mileage?

{-_-}

iTrader: (2)

yes, higher psi = better gas mileage, but too much and you will cause premature wear in the middle of your tires.

there is no 'right' answer to this question... you just have to determine from trial and error. but a general rule is to have the front psi higher than the back since all the meat and potatoes are in the front.

fyi, i run mine 37/35 for front/rear and love it.

SKYRockerr

Whats the best tires right now
37/35... better gas mileage, i love it

{-_-}

iTrader: (2)

head over to the tires forum and check it out... lots of people seem to like the falkens and yokohamas over there...

ZIPPIN

iTrader: (32)

i run 33 in pirelli pzero nero..thinking about going upto 34