Tire diameter Q ???

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Feb 18, 2008 | 01:58 PM

AlisonC5

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From: Amherst VA

Tire diameter Q ???

I'm looking at a staggard set of tires, the fronts are 1.6" shorter than the rears. (18s and 19s)

Is 1.6" too much?? Is it going to cause my car to throw AH codes??

Thanks for any input you might have on this,

Andy

Feb 18, 2008 | 02:29 PM

robvuk

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Joined: Sep 2004

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From: Los Angeles

Quote:

Originally Posted by AlisonC5

The AH and TC systems are built with a small amount of tolerance before they get activated. I think 1.6 inches is probably not going to cause immediate problems because it is at least in the correct direction of smaller in front. However, making changes like this "uses up" some of the tolerance the system has and when you make a maneuver that requires AH or TC intervention, it will be either that much more sensitive or delayed, depending on which action takes place. In other words, when it does intervene, it will not quite be when or as expected. It's your call. Other than that, I don't think you will get any codes.

Feb 18, 2008 | 04:25 PM

AlisonC5

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From: Amherst VA

Thanks!!

the fronts are 25" (same as stock) and the backs are 26.6" (.6 taller than stock).

Last edited by AlisonC5; Feb 18, 2008 at 04:28 PM.

Feb 18, 2008 | 04:37 PM

Mr. Lucky

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Joined: Jun 2004

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From: Newark, DE

St. Jude Donor '06

Quote:

Originally Posted by AlisonC5

...the backs are 26.6" (.6 taller than stock).

np - 26.6" is the stock rear OD.
http://www.1010tires.com/TireSizeCalculator.asp

Feb 18, 2008 | 04:41 PM

AlisonC5

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From: Amherst VA

Quote:

Originally Posted by Mr. Lucky

np - 26.6" is the stock rear OD.
http://www.1010tires.com/TireSizeCalculator.asp

Hmmmmm, guess there's nothing left to do but pull the trigger...

Thanks

Feb 18, 2008 | 05:46 PM

Russ K

Burning Brakes

Joined: Jul 2006

Posts: 968

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From: Regina Sask

The stock front tire dia is 25.6 on a C5. Just find the same dia. front tires, as 25" is too short. Plus you will have a larger fender gap.

Russ Kemp

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