Thanks for all the feedback everybody, I decided to stay conservative and run 245/35/19 f and 275/35/19 r on M Super Sports. Running Vossen wheels 19x8.5 f
19x10 r
I called and talked to a tech at tire rack & he said 255 would be fine up front & that I could go as wide as 295 r. However I went down to dicount tire and talk to a tech & he didn't recommend me going over 245 in front and said I could go up to 295 r however he would not go higher than 285.
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2009 E92 M3 DCT: BPM tune + DCT tune & Servotronic | Velos Solo VII 19x 8.5, 19x11 | Michelin Pilot Super Sport 255/35/19 front 295/30/19 rear | M Performance Exhaust | BCM Air Intake Filter
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