C6 traction control keeps going active
Thread Starter
Heel & Toe
Joined: Dec 2006
Posts: 23
Likes: 0
From: Houston, TX
C6 traction control keeps going active
Test drove C-6 vert today with 23k miles that I am thinking about buying. It has Vellano VSH wheels on it. The front wheels are 20 inches x 9 1/2 width with 255/30/20 tires, and the rear wheels are 20 inches x 11.5 with 305/25/20 tires. No other aftermarket mods other than the wheels. The traction control handling keeps going active around 70 mph and will not allow the car to accelerate. When I deactivate the traction control the car drives fine or if i put the car in competitive mode it drives fine.
1. Is it the wheel size or tire size? Or,
2. Is it a problem with the traction control handling system
1. Is it the wheel size or tire size? Or,
2. Is it a problem with the traction control handling system
Team Owner
Joined: Nov 2007
Posts: 45,273
Likes: 8,545
From: Rochester, NY
Could be a problem with the tire pressure monitors if they were not installed properly or calibrated with the new wheels. This is a guess on my part based on what I have read, but worth asking about.
Race Director
Joined: Jun 2005
Posts: 10,909
Likes: 2,701
From: Phila Suburbs 2023 C8 & 2013 650ix
More likely a problem with the ratio of front tire diameter to rear tire diameter. If the ratio is considerably different than stock, the traction control system see's it as an error and activates the system.
Stock tires are 25.7 " front and 26.9 " rear in diameter.
Stock tires are 25.7 " front and 26.9 " rear in diameter.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
Probably the wheel/tire sizes. If the new diameter was equal to the stock diameter there would be no problem but you are smaller in the front and larger in the rear, evidently enough to trigger the TC.
New Front is Plus 0.31 inches stock diameter
New Rear is Minus .85 inches stock diameter
Try; http://www.1010tires.com/TireSizeCalculator.asp
New Front is Plus 0.31 inches stock diameter
New Rear is Minus .85 inches stock diameter
Try; http://www.1010tires.com/TireSizeCalculator.asp
Last edited by haljensen; May 7, 2009 at 09:24 AM.
Thread Starter
Heel & Toe
Joined: Dec 2006
Posts: 23
Likes: 0
From: Houston, TX
The Toyota dealership where the car is at is taking the Vette over to a Chevy dealer this morning to have them check it out. After reading these threads, I'm sure it will have something to do with the wheels that's makin it go active. I will post what the Chevy dealership indicates the problem is.
Thanks for the feedback. Much appreciated.
Thanks for the feedback. Much appreciated.
