Quote:
Originally Posted by omasou
I didn't do the math assumed Keith gave me the correct sizes?
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Those are 1 increment is size larger than stock not smaller. It will slightly increase actual speed for the same indicated value. If you haven't coded your car to indicate true speed, it will be showing (speed - 3.1 mph) anyway, so if anything it will indicate a tad closer to true speed.
On my E90 M3 I run the same sizes (stock sizes are same as M2: 245/35-19, 265/35-19), and even with the car coded for true speed, my GPS verified speed is spot on accurate.
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Current Stable:
2024 G20 M340i Melbourne Red/Cognac
2019 F87 M2 Competition 6MT, LBB, slicktop, exec pkg
2007 E91 328i Silver, slushbox, Eibach fr/E93 M3 rear sway bars, ARC-8