In Reply to: Question for Jim Bassett. posted by DM3 on January 05, 2000 at 17:14:57:
: What are "front bearing hats" and how do they change the front wheel camber?
The front bearing hats are the very top part of the front struts, that bolt at the shock tower. On 96+ M3s, you can swap them L<->R to add about 1-2 degrees of negative camber.
I've found this to be a pretty good "compromise" setup. My street tires wear more on the insides now, but with same-size F&R rotating should help even it out. My track tires have nearly even wear (a bit more on the outside) - again rotating can even this out.
And, no, I don't know the procedure :-) This seemed a bit too involved for me to DIY, so I had my mechanic do it while in for a track school tech inspection - took him about an hour.