The Sad

iTrader: (8)

I have tried to do searches on this, and haven't really found the answer.

The question, on an Fbody, how much tire height difference can you have, and still have trac control (never use it anyway) and ABS? I would like to lower the front a little with the stock 275/40/R17 on it, and get a tire that is taller in the rear (either more sidewall, or an 18" rim).

Some things I have read:
-You can't tune for the difference
-10% is the max difference
-5% is the max difference

If anyone knows, or has first hand knowledge, I would appreciate it. TIA

Xsta Z 28

iTrader: (2)

Don't know, but since it is my brakes I sure don't want to guess, and wind up crashing my car . . .

The Sad

iTrader: (8)

I don't want to guess either. Thats why I would like someone that knows to chime in. Anyone?

The Sad

iTrader: (8)

To The Top

2MuchRiceMakesMeSick

10% worked for me. You cannot change anything in the pcm (as of now) to reflect the different tires. If your ABS INOP comes on youll know its not working.

The size of the rim has nothing to do with the wheel rotation. Its the overall tire circumfrence of the tire.

The Sad

iTrader: (8)

I know the size of the rim has nothing to do with rotation kinda - I should have specified, but if I went with an 18 in the rear - I would still have a 274/40 on it so that the sidewall would be the same (I don't like the real thin profile) so then the height would be a about inch taller.

Is that 10% the diameter or circumference differece? Thanks.