I've bought a set of these.
http://www.cslregister.com/forum/sho...ghlight=wheels
Or you could buy the original BBS gt4 re (the above are a rep 1lb heavier)
http://alekshop.com/products/bbs_racing_wheels_bmw_gt4
Then there's Rays wheels, lighter than above, for example, shimmys are Rays.