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      11-07-2012, 11:28 AM   #4
M3SQRD
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Drives: E92 M3s,R56 CooperS,F22 228iX
Join Date: Jun 2009
Location: EC

iTrader: (2)

I agree with Ben and The Tech. I was using lightweight wheels (< 18 lb/wheel) on my track prep'd e46 M3 with Michelin PSC r-comps (F 21 lb, R 23 lb). When I switched to Nitto NTO1 r-comps each tire weighed 6-8 lb more and I could "feel" the difference on track in terms of braking (higher rotor/caliper temps with heavier setup) and accelerating. There was a change in initial turn-in but I'm not sure if that was due to different tires/compounds or increased weight (switched back to PSCs); however, my lap times were consistently lower with the lighter wheel-tire setup.