Quote:
Originally Posted by k2pilot
I'm glad to see that you're running those sizes, that's exactly what i want to run with the new bridgestone re-11's. It looks like everyone else goes to 235/40-18 and 265-35-18, which has a 3% smaller rolling diameter. Where as a 245/45-18 and 275/40-18 is 2.5% larger than stock, so even better if you DD.
My question for all you though, will those sizes rub? I don't see why considering most of you guys manage to stuff rims that are a solid 1" larger than stock.
since stock is
F: 225/45-18 803 turns per mile (TPM)
R: 255/40-18 799 TPM
looks like another option would be:
F:245/40-18 811 TPM (-0.98% different)
R:265/40-18 792 TPM (+0.88% different)
F/R difference: 1.86%
Though i'm still leaning towards
F:245/45-18 780 TPM (+2.9%)
R:275/40-18 782 TPM (+2.1%)
F/R difference: 0.8%.
I'd much rather having a larger tire size bias over a reduce diameter since i DD the car and it logs some freeway hours. So, thoughts?
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Never go larger diameter on your wheels than stock. This will screw up your ABS and therefor your breaking distance will be longer.
As far as I was told, with bigger diameter your wheels turn less times than they should, which under braking can mean that ABS will "think" that your wheels are sliding and therefor will lower the pressure from the break pads. I was urged by people who do racing to never put bigger diameter wheels on BMW.