mean_greenZ

iTrader: (1)

all of you with 17x11 zr1's and have the sumitomo htr-z 315/35/17 tires... what do you keep the rear psi at?? both sets i have had always wore the middle down ALOT quicker than the outside tread. i kept psi at 35. do they need to be lower than that?

94TRANS

iTrader: (39)

i always ran 35 and had no problems...

mean_greenZ

iTrader: (1)

yours wore evenly?

94TRANS

iTrader: (39)

yup, have your alignment checkd maybe?

94TRANS

iTrader: (39)

and i had 2 sets with no issues.

jobuhoohoos

mine have stayed even as well. are you checking the psi with the tires cold or warm?

jimmypop13

iTrader: (17)

I keep mine around 38-40psi cold and it's always worked great for me

Raptor_WS6

iTrader: (23)

40 psi

mean_greenZ

iTrader: (1)

i check them cold. i guess i'm just gonna have to wait til i get 4 new ones and take it to get a 4 wheel alignment done on it. im thinking of filling them with nitrogen this time so they won't fluctuate psi.

sscamaroburn02

iTrader: (14)

i kept mine at 32-34 and tires wore evenly. this was cold pressure

litle88

iTrader: (20)

you cant do a 4 wheel allignment can you?
How are you or they going to do the rears?
I thought that if the middle wore out quicker was because of burnouts and not hooking off the line.

Johnnystock

iTrader: (6)

If youre doing lots of sliding and hard turns, might be normal...35psi should be good but go higher since it doesnt work.

BlueBird346

iTrader: (13)

I had 2 sets of them and they wore unevenly too. I noticed it on the first set so I played with the pressure on the second and they did it too. I have NT555s now and im happy so far.

MadMike 97 Z28

iTrader: (3)

treadwear on center indicates over inflation. treadwear on edges indicate under inflation. also keep in mind that rear tires aren't gonna wear on the edges as much as front due to less side force on the tire. so you need to run close to 30 in the rear to help create more wear on the edges.

http://davesultimateautomotive.com/P...0PATTERNS1.jpg

mean_greenZ

iTrader: (1)

i don't do that much playing on them to justify it wearing out that quick in the center, nor do i do any kind of drifting or sliding and what not on them. they have never been over-inflated. always kept between 30-35psi.

quews6lime

iTrader: (22)

yeah 35lbs would be nice

MyFirstLS1

iTrader: (8)

i notice it is wearing a little more on the inside not much though.

an alignment won't do anything on our car there are no adjustments to be made its a solid rear axle

02CamaroSSLE

iTrader: (5)

alignmet wont do much... they are just going to wear like that nothing you can really do except drop the pressure down... but iunno if you would wanna do that...

mean_greenZ

iTrader: (1)

i guess i will go back with the same tires and this time fill them with nitrogen at 35 psi so it won't change due to temp. changes.

mean_greenZ

iTrader: (1)

nevermind on the last post about the nitrogen.. just found a couple threads on here saying it really isn't worth the trouble and i can see how. so i will just go back with the same ones and use air