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-   -   How tolerate the ABS can be for different tire size (https://www.bimmerfest.com/forums/showthread.php?t=1336587)

Dalplex 06-29-2019 10:07 PM

How tolerate the ABS can be for different tire size
 
Hello,

Will ABS chime in if the front is 2.2% larger then rear?

Or would CC not engage once above certain speed?

Thanks for your advise

Target 06-29-2019 10:19 PM

I have a staggered setup on mine, with 245/45-R18 in the front and 255/55-R18 in the back. That's only a difference of 1,33%, but it doesn't cause any problems.
My first staggered setup on the car was with more than 5% difference, and that caused some errors (can't remember which, sorry) and it also caused the autopark feature to stop working.

Out of interest; why would you ever have larger wheels in the front than the rear?

Dalplex 06-30-2019 04:26 AM

Thanks.

The original front is 245/35/21 and rear is 285/30/21. The front just not right as it looks stretch too much.

I have a set of 265/35/21 from Audi. Or I can buy a pair of 275/30/21 but may be too hard to mount.

JayR04 07-01-2019 11:41 AM

If the difference in height is within 3% you should be fine

Dabizness24 07-09-2019 11:10 AM

I just had this problem with my 2006 760li. I had put a staggered 20 inch set on my car with 245/35/20 in the front and 275/40/20 in the rear. My abs, parking light, and traction control fault light all came on within a block of getting the tires mounted.. after doing research it appeared that the abs speed sensors were likely reading the rotation of the front and rear tires at two different speeds due to the front tires being smaller they rotate at a faster rate. I decided to change my front tires to 245/40/20, my problem went away.

Dalplex 08-04-2019 02:32 PM

Update:

Replaced the front 245/35/r21 with 265/35/r21 with much better appreance.

No abs problem yet.


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