Best F/R Pressure On The Street - LS1TECH



Wheels & Tires Forged | Billet | Cast | Radials | Slicks
Sponsored by:
Sponsored by:

Best F/R Pressure On The Street

Reply
 
Thread Tools Search this Thread
Old 12-17-2008, 01:26 AM   #1
Teching In
Thread Starter
 
ss346ci's Avatar
 
Join Date: Mar 2008
Location: Oklahoma City, Oklahoma U.S.A.
Posts: 40
Default Best F/R Pressure On The Street

I have a 2000 SS with 275/40zr17 kumho ecsta asx tires all around on the stock 17x9 ZR1s, and after taking a wheel/tire combo to hibdon's for a flat repair, I noticed that the rears are both wearing more in the center signaling an overinflated condition. I run all four corners at 30psi as per the gm sticker. What's the best rear pressure for the street?
ss346ci is offline   Reply With Quote
Old 12-17-2008, 09:14 AM   #2
TECH Fanatic
iTrader: (1)
 
Bird Man's Avatar
 
Join Date: May 2002
Location: Perrysburg,Ohio
Posts: 1,304
Default

They shouldn't be wearing in the middle at that pressure.
Bird Man is offline   Reply With Quote
Old 12-17-2008, 10:57 AM   #3
11 Second Club
iTrader: (13)
 
kdavis's Avatar
 
Join Date: Jun 2007
Location: Encinal/Kingsville, Texas
Posts: 839
Default

i keep a little more pressure in the front than the rear, due to the front haveing more weight on the tires.
kdavis is offline   Reply With Quote
Old 12-17-2008, 12:20 PM   #4
Teching In
Thread Starter
 
ss346ci's Avatar
 
Join Date: Mar 2008
Location: Oklahoma City, Oklahoma U.S.A.
Posts: 40
Default Pressure

I think that the F/R weight balance on our cars is 57/43 or 58/42 so that would require less air pressure in the rear tires than the front. Since 30 psi has delivered even wear in the front, I expect that less pressure would deliver the best results in the rear.
ss346ci is offline   Reply With Quote
Old 12-17-2008, 04:14 PM   #5
Banned
iTrader: (10)
 
cookba's Avatar
 
Join Date: May 2006
Location: Tampa
Posts: 2,844
Default

i have ran 32 front and 30 rear on my KDW tires the past 2 years with no issue. I think my next tires i will try 32 front and 28 rear.
cookba is offline   Reply With Quote
Old 12-18-2008, 09:55 AM   #6
TECH Senior Member
iTrader: (2)
 
Xsta Z 28's Avatar
 
Join Date: Feb 2002
Location: Schaumburg, IL
Posts: 12,094
Default

32 ish . . .
Xsta Z 28 is offline   Reply With Quote
Old 12-18-2008, 11:09 AM   #7
TECH Addict
 
NC01TA's Avatar
 
Join Date: Aug 2006
Location: Western North Carolina
Posts: 2,675
Default

Quote:
Originally Posted by ss346ci View Post
I have a 2000 SS with 275/40zr17 kumho ecsta asx tires all around on the stock 17x9 ZR1s, and after taking a wheel/tire combo to hibdon's for a flat repair, I noticed that the rears are both wearing more in the center signaling an overinflated condition. I run all four corners at 30psi as per the gm sticker. What's the best rear pressure for the street?
No way should there be a problem at 30 psi. Get a new quality tire gauge and see the probable difference. Some cheap gauges can be way off.
NC01TA is offline   Reply With Quote
Old 12-18-2008, 12:07 PM   #8
Teching In
Thread Starter
 
ss346ci's Avatar
 
Join Date: Mar 2008
Location: Oklahoma City, Oklahoma U.S.A.
Posts: 40
Default

I have a "quality" camel tire gauge and I have tried a snap on gauge at my dads shop which corresponded with my dial gauge. With almost 60% of the 3500 lbs over the front axle, the rear tires will definately need a few psi less to wear evenly. I'm just going to mark tht top of the tread with chalk and alter pressure until the wear is even across the tread surface.
ss346ci is offline   Reply With Quote
Reply


Tags
27540zr17, air, pressure, street

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 09:16 PM.