TMS Code after z07 wheels installed
Thread Starter
Instructor
Joined: Sep 2003
Posts: 157
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From: alexandria la
TMS Code after z07 wheels installed
Maybe you guys can help me out. I installed ACE Slick Z07 18x11 rear and 18x9.5 fronts and now when driving with the traction control ON the car goes into limp mode. When I turn OFF the traction control it drives fine. I have no clue whats going on.
Le Mans Master
Joined: Mar 2002
Posts: 8,466
Likes: 51
St. Jude Donor '17
did you keep the same ratio for the height of the tires?
Racer
Joined: Sep 2006
Posts: 260
Likes: 1
From: Chesterfield MI
GM designed these cars with the rear tires having a larger diameter and circumference than the front. The traction control is built/calibrated to know that the front tires should be traveling faster than the rear. When the rear tires travel near or faster than the front, the traction control wants to do its thing. My guess is you have front tires with a circumference that is equal to or larger than the rear. Check the codes and see what they are telling you.
Thread Starter
Instructor
Joined: Sep 2003
Posts: 157
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From: alexandria la
Former Vendor
Joined: May 2006
Posts: 718
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From: Riviera Beach FL
That's your problem. Same rolling circumference front and rear. The Traction Control thinks the read tires are loosing traction. Need to reduce the fronts or increase the rears in rolling circumference.....
ie taller tires in the rear or shorter tires in the front
8vette7 is correct. Go to the Tire Rack web site, they have the circumference of all the tires they sell. You need to find the ratio of the circumference of the stock front to rear tires, then find tires with a similar ratio. It does not have to be dead nuts on. On my 18 x 9 1/2 fronts and 18 x 11 rears I ran 265 front and 295 rears. I have since switched to 275/35 and 315/30 using the same rims. Make sure to keep the aspect ratio in mind when you are calculating ratios.
ie taller tires in the rear or shorter tires in the front
8vette7 is correct. Go to the Tire Rack web site, they have the circumference of all the tires they sell. You need to find the ratio of the circumference of the stock front to rear tires, then find tires with a similar ratio. It does not have to be dead nuts on. On my 18 x 9 1/2 fronts and 18 x 11 rears I ran 265 front and 295 rears. I have since switched to 275/35 and 315/30 using the same rims. Make sure to keep the aspect ratio in mind when you are calculating ratios.
Last edited by Doug@MorosoPerformance; Sep 1, 2008 at 05:16 PM.
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