I just put the 225/40-18 Michelin Pilot Arctic Alpin square setup on yesterday and aired up to 35 all around (cold pressure). I wouldn't overthink it too much on winter tires. Anywhere from 32-39 is fine.
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2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
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