I like it, deff unique, not to mention they (tire+can) can easily be taken out at the track, so no big deal.
I saw this OEM fully functioning factory radar detector sell recently on r3v for $25, definately one of the cooler more rare factory parts/options I've seen for an E30, I'd love to find a deal like that some day..
1990 325i Sterling Silver Metallic/Black leather.
M52B28 OBD-I W/ S52 Cams, M50 Manifold, SS Headers, Kamotors v5 CAI, Stage 2 F1 clutch w/ 14lb chromoly flywheel, Mark D chip tune.
Bilstein Sports with H&R Race springs + E90 drop hats, F+R Strut bars, '04 330ci Steering rack (3.0 Lock to lock, 13:1), 3.15 Z3 Torsen LSD.
Custom Built BBS RS's 16x8 square.