New 2009 2010 BMW Z4 - ZPOST - View Single Post - Does going to wider tires affect the traction control?

Alext · 12-29-2012, 11:14 PM

I am looking at using some Michelin PSS or Bridgestone RE-11 in the following size: F: 235/35/19 and R: 275/35/19 on my e89 Z4.

Would the slightly extra height of the rubber and thus different revs per min of the wheel be enough to trigger the traction control to brake the car uncontrollably / intermittently even though I am keeping to the same aspect ratio. I wonder this because I heard the ECU in BMWs is very finely calibrated - IS there a MINIMUM % of tire diameter I need to keep within before the TC is triggered?

12-29-2012, 11:14 PM	#1
Alext Banned 138 Rep 2,042 Posts Drives: B M W Join Date: Apr 2008 Location: Everest iTrader: (2)	Does going to wider tires affect the traction control? I am looking at using some Michelin PSS or Bridgestone RE-11 in the following size: F: 235/35/19 and R: 275/35/19 on my e89 Z4. Would the slightly extra height of the rubber and thus different revs per min of the wheel be enough to trigger the traction control to brake the car uncontrollably / intermittently even though I am keeping to the same aspect ratio. I wonder this because I heard the ECU in BMWs is very finely calibrated - IS there a MINIMUM % of tire diameter I need to keep within before the TC is triggered?
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