Tire size and active handling?
Thread Starter
Le Mans Master
Joined: Apr 2001
Posts: 5,475
Likes: 718
From: Black Forest CO
Tire size and active handling?
I did some searching on this and could not find quite the answer that I was looking for. I have a 2002 coupe.
I have an opportunity to trade my current wheels/tires (265/35-18 and 295/35-18) for another set of wheels/tires (275/35-18 and 335/30-18).
The diameter of the new tires are 25.7" front and 25.9". This differs quite a bit from the stock size and differs a fair amount from what I have now. Will the front/rear difference of only .2" cause active handling problems when the stock difference was 1.1"?
I have an opportunity to trade my current wheels/tires (265/35-18 and 295/35-18) for another set of wheels/tires (275/35-18 and 335/30-18).
The diameter of the new tires are 25.7" front and 25.9". This differs quite a bit from the stock size and differs a fair amount from what I have now. Will the front/rear difference of only .2" cause active handling problems when the stock difference was 1.1"?
Le Mans Master
Joined: Sep 2004
Posts: 5,707
Likes: 4
From: Los Angeles
I did some searching on this and could not find quite the answer that I was looking for. I have a 2002 coupe.
I have an opportunity to trade my current wheels/tires (265/35-18 and 295/35-18) for another set of wheels/tires (275/35-18 and 335/30-18).
The diameter of the new tires are 25.7" front and 25.9". This differs quite a bit from the stock size and differs a fair amount from what I have now. Will the front/rear difference of only .2" cause active handling problems when the stock difference was 1.1"?
I have an opportunity to trade my current wheels/tires (265/35-18 and 295/35-18) for another set of wheels/tires (275/35-18 and 335/30-18).
The diameter of the new tires are 25.7" front and 25.9". This differs quite a bit from the stock size and differs a fair amount from what I have now. Will the front/rear difference of only .2" cause active handling problems when the stock difference was 1.1"?
Thread Starter
Le Mans Master
Joined: Apr 2001
Posts: 5,475
Likes: 718
From: Black Forest CO
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
It becomes an issue when the fronts are larger diameter than the rears and the rear rpm is higher than the front. the computer interprets that to mean the rear wheels have lost traction and are spinning.
With only .2 inch difference, you will not need very much rear wheel slippage to kick in traction control...
With only .2 inch difference, you will not need very much rear wheel slippage to kick in traction control...
Thread Starter
Le Mans Master
Joined: Apr 2001
Posts: 5,475
Likes: 718
From: Black Forest CO
That makes perfect sense! Thanks.
It becomes an issue when the fronts are larger diameter than the rears and the rear rpm is higher than the front. the computer interprets that to mean the rear wheels have lost traction and are spinning.
With only .2 inch difference, you will not need very much rear wheel slippage to kick in traction control...
With only .2 inch difference, you will not need very much rear wheel slippage to kick in traction control...
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