For sale are 4 Kosei K1's. Used for a few years for random track days, but all in great condition. No curbing, cracks, etc. Just minimal signs of wear. I used these on a 335i coupe and a sedan and they fit with no problems. I used tire size 255/40-17. They are a great lightweight wheel as everybody knows, you see these everywhere. Only 16.8 lbs each.
New on tire rack they are $700 for 4. I will take $400. Would prefer to sell local so for now I won't ship, but that could change if I find no takers locally. If I do ship I may need to adjust the price as the shipping won't be cheap.