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      11-15-2012, 12:57 AM   #2

Drives: GT4, C2S, E90,46,&E36M3, S2000
Join Date: Feb 2008
Location: Pleasanton, CA

iTrader: (7)

you should be running 265/35R19 not 265/30R19 in the rear

i used gps to verify my speedometer. it's about 2% error for me on stock 18's (75 indicated is 73)

speedometer is picked up off rear but the car gets wheel speed data from fronts and rears

if you do a burnout they know you are going 0-5mph even though your rears are going 30mph... that is how they have tried to get out of warranty claims in the past
M3 Sedan - AW/Black - 6MT - no moonroof - no folding seats - RAC RG63 - clear bra by Omega Werks