Do you have it in your M2 with manual transmission, too and is it worse than with the other cars?
My other bimmers including the Z3 M Coupé are free of clunking so far. Even my old e36 M3 3.2 with 200.00 km had only very little clunking.
The new M2 is REALLY anoying regarding that. I never felt that in any other car
