I was wondering what wheel sizes were legal on a '93 325is for BMWCCA and SCCA ITS classes. My car originally came with 15" rims I have heard read of restrictions on increasing wheel size beyong 1".

Also, does someone know if aftermarket cams are allowed for my car in BMWCCA and SCCA ITS?

Sorry about the vague questions. Any help is appreciated.

Thanks.