There is confusion surrounding our two models of BMW E46 camber plates and we get asked about the differences all the time. We make one for the E46 “non-M” cars, like the 325, 328, 330 and Z4. We make one with different initial geometry for the E46 M3, but only for street and dual purpose cars. This forum post hopefully explains this in better detail.
The key differences is for a dedicated E46 M3 or Z4M race car, you should actually use the non-M camber plate versions. This one has more negative camber potential, but not enough positive camber travel for a pretty street car alignment. Still not clear? Read this to learn more. Thanks!