Traction Sys Active w/new wheels

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Oct 21, 2003 | 10:49 AM

jamwme99

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3rd Gear

Joined: Oct 2003

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From: Kansas City Missouri

Traction Sys Active w/new wheels

I put four 18x9.5 Z06 style wheels on my 99 C5 but now the traction control system is activating during highway driving. I have been told the computer is programmed for a differential in front and rear spin rates and when they differ too much it activates the traction control. Is this true, can it be reprogrammed, does anybody have any recommendations? :confused:

Oct 21, 2003 | 10:58 AM

Monster231

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From: Chicago il

Re: Traction Sys Active w/new wheels (jamwme99)

I have the same set up on my 98, and i have no probs. what type of tires are you running, I suppose if the pver all diameter of the wheel is alot bigger there will be a big difference

Oct 21, 2003 | 12:30 PM

0vetteshop

Former Vendor

Joined: Apr 2001

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From: FL

St. Jude Donor '13

Re: Traction Sys Active w/new wheels (jamwme99)

The ABS module looks for a wheel speed variation of 6mph to detect a fault or activate the ABS,which wouldnt be from a 1" diameter tire difference...The best way to check would be to monitor wheel speeds with a TECH2 :yesnod:

Oct 21, 2003 | 02:41 PM

jamwme99

Thread Starter

3rd Gear

Joined: Oct 2003

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From: Kansas City Missouri

Re: Traction Sys Active w/new wheels (Monster231)

Quote:

I have the same set up on my 98, and i have no probs. what type of tires are you running, I suppose if the pver all diameter of the wheel is alot bigger there will be a big difference

Goodyear Eagle F1 275/40/18 on all fours.

Oct 21, 2003 | 04:43 PM

Dope

Resident moron

Joined: Jun 2003

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From: Assachusetts

Re: Traction Sys Active w/new wheels (jamwme99)

Quote:

Goodyear Eagle F1 275/40/18 on all fours.

There's your problem. You need to have differing tire sizes, front to back. Try 275/40/18s on the rear and 275/35/18 on the front, that should do the trick.

Dope

Oct 21, 2003 | 05:02 PM

Bill Dearborn

Tech Contributor

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From: Charlotte, NC (formerly Endicott, NY)

Re: Traction Sys Active w/new wheels (Dope)

I run 25.3 diameter wheels front and rear and have no problem with T/C. I have used this wheel/tire combo on both my 97 and my Z06.
Bill

Oct 22, 2003 | 11:45 AM

jamwme99

Thread Starter

3rd Gear

Joined: Oct 2003

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From: Kansas City Missouri

Re: Traction Sys Active w/new wheels (Monster231)

Quote:

I have the same set up on my 98, and i have no probs. what type of tires are you running, I suppose if the pver all diameter of the wheel is alot bigger there will be a big difference

What size tires do you have front and rear?

Oct 22, 2003 | 12:37 PM

Bill Dearborn

Tech Contributor

Joined: Oct 1999

Posts: 41,036

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From: Charlotte, NC (formerly Endicott, NY)

Re: Traction Sys Active w/new wheels (jamwme99)

From playing around swapping wheels I have found out that T/C will cut in very quickly if the front tires are a larger diameter than the rears. In my case T/C applied the rear brakes while coasting down hill in nuetral.
Bill