Traction Control System Active

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Sep 14, 2024 | 10:49 PM

Connocclar

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2nd Gear

Joined: Sep 2024

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Traction Control System Active

2007 base, put on new wheels and tires today. 305/35R19 rear and 265/45R18 front. All of the calculators I've used say they have the exact same diameter. Whenever I get up to ~70 mph the traction control active message will pop up on the display. Looking for help figuring out the cause. I assumed the tires were spinning at different speeds but with the exact same diameter they should be same speed. There is no check engine light.

Sep 14, 2024 | 11:56 PM

jamieo

Melting Slicks

Joined: Oct 2010

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From: Tollesboro Kentucky

Tires need to be staggered,not the same diameter.That is the issue.

Sep 15, 2024 | 01:09 AM

Connocclar

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2nd Gear

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Quote:

Originally Posted by jamieo

Tires need to be staggered,not the same diameter.That is the issue.

Do you know where I can find that info written?

Sep 15, 2024 | 02:10 AM

jamieo

Melting Slicks

Joined: Oct 2010

Posts: 3,033

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From: Tollesboro Kentucky

In countless posts on the forum.I think a 4% difference is what the ebcm is happy with.A 265/40 would make it work.

Sep 15, 2024 | 09:02 AM

torquetube

Le Mans Master

Joined: Dec 2004

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From: West coast CA

Quote:

Originally Posted by Connocclar

Quote:

Originally Posted by jamieo

Tires need to be staggered,not the same diameter.That is the issue.

Do you know where I can find that info written?

Look at your door jamb. The stock sizes are printed there. Calculate the diameters. The rears are about 1.2" larger than the fronts, or about 104%.

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