Wheel size an offset question need help
Thread Starter
Intermediate
Joined: Apr 2012
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Wheel size an offset question need help
Was going to order c6 z06 hypersilver wheels I was originally going to get 18x8.5 with +56 offset but instead I want 18x9.5 with a +50 offset with the 18x9.5 in the front will I have any clearance problems with steering and it rubbing the wheel well..an if not i was going to lower it will it still clear the front wheel wells when turning
Drifting
Joined: Jan 2012
Posts: 1,341
Likes: 8
From: Hopatcong New Jersey
275/35 front and 285/35 rear is what i run on my 18x9.5 + 19x10 rims. These are very close to stock diameter and wont cause any traction control/active handling issues.
a 245 is WAY narrow for a 9.5" width. And a 245/40 would have a larger overall diameter than a 275/30...that combination does not work. You need your front wheels to have a diameter AT LEAST .5 smaller than your rear wheels. Also, the diameter of your rear wheels can not be more than 1.5" larger than your front.
a 245 is WAY narrow for a 9.5" width. And a 245/40 would have a larger overall diameter than a 275/30...that combination does not work. You need your front wheels to have a diameter AT LEAST .5 smaller than your rear wheels. Also, the diameter of your rear wheels can not be more than 1.5" larger than your front.
Last edited by dblerman; Dec 6, 2012 at 10:35 PM.
Drifting
Joined: Jan 2012
Posts: 1,341
Likes: 8
From: Hopatcong New Jersey
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Thread Starter
Intermediate
Joined: Apr 2012
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thanks! because i heard i may need a retune to reset the speedo an i went on a tire size calculator site and put the 275/35 front and 285/35 rear and it says theres a 4.77% Diameter difference and the speed for the fronts said rolling at 60mph and the rear said it would be 57.1 and there saying thats a 5% difference i didnt no if that was ok or not.What brand tires are you running with your wheels
Drifting
Joined: Jan 2012
Posts: 1,341
Likes: 8
From: Hopatcong New Jersey
thanks! because i heard i may need a retune to reset the speedo an i went on a tire size calculator site and put the 275/35 front and 285/35 rear and it says theres a 4.77% Diameter difference and the speed for the fronts said rolling at 60mph and the rear said it would be 57.1 and there saying thats a 5% difference i didnt no if that was ok or not.What brand tires are you running with your wheels
Drifting
Joined: Jan 2012
Posts: 1,341
Likes: 8
From: Hopatcong New Jersey
I got them from tirerack.com last year, they were going around $1100 then. Now tirerack has them for $850.
Pro
Joined: May 2003
Posts: 687
Likes: 228
From: Kemah Texas
Just added 18x9.5/+57mm with 275/35 on the fronts and 19x11/+64mm with 305/30 in the rear on my C5. No rubbing and the handling is night and day from stock. C6 Z06 replicas (original style 10-spoke). No problems with computer or noticeable difference in speedo. Go as big as you can, you'll love it.
Last edited by tomlink; Dec 8, 2012 at 05:31 AM.