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Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
What are your tire's overall diameters, front and rear? The rears need to be at least 1/2" taller than the fronts, or you activate the limp-home mode. Hard to drive it that way. EIther that, or you bought 80lb wheels, and it just feels that way. 
Burning Brakes
Joined: Oct 2008
Posts: 898
Likes: 25
From: Dallas, TX
Since you have 20s all around, I am assuming that you have the same tires on all 4?
Maybe you could swap out the rear rubber for something taller? I wonder if you went slightly taller in the rear and lowered the front end a bit if it would do the trick. Not sure if that would look funky or not. Anyone know?
I thought I read somewhere that the sensors for the body control were under the pass seat.
Just a thought. More of a question for the group than advice.
You could also buy a set of 19s for the front and try to sell the 20s as rears, but I bet you'd lose big on the deal with only 2...
Maybe you could swap out the rear rubber for something taller? I wonder if you went slightly taller in the rear and lowered the front end a bit if it would do the trick. Not sure if that would look funky or not. Anyone know?
I thought I read somewhere that the sensors for the body control were under the pass seat.
Just a thought. More of a question for the group than advice.
You could also buy a set of 19s for the front and try to sell the 20s as rears, but I bet you'd lose big on the deal with only 2...
Last edited by 03WhiteConv; Oct 23, 2009 at 07:59 PM.
Melting Slicks
Joined: May 1999
Posts: 2,365
Likes: 0
From: Vancouver BC
the fronts r 1 inch taller never thought ov this what is the answer
TC can't handle same size front and rear. Compensate with right tires...
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Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The OVERALL HEIGHT of the REAR tires M U S T be 1/2" taller than the OVERALL HEIGHT of the FRONT tires.
If the FRONT and REAR tires are the same height,,, the wheel speed sensor data from the rear tires will make the Electronis Brake Traction Control Module (EBTCM) think that the rear wheels are loosing traction and it will apply the brakes to correct the problem.
Put shorter height tires on the fronts OR taller tires on the rears.
If the FRONT and REAR tires are the same height,,, the wheel speed sensor data from the rear tires will make the Electronis Brake Traction Control Module (EBTCM) think that the rear wheels are loosing traction and it will apply the brakes to correct the problem.
Put shorter height tires on the fronts OR taller tires on the rears.
DOUG B NOT SO FRESH
Burning Brakes
Joined: Mar 2008
Posts: 983
Likes: 36
From: Middle Of Kali CA
While we are on this subject, will a LARGER difference cause a problem. I am putting on C6Z wheels and tires on my '02Z. The difference is 1.1" taller in the rear. '02Z stock has a .7" taller rear. Any thoughts?
Thanks,
John
Thanks,
John