BMW Original Motor Sport Mahle by Bbs. x4.. This unique Proto type Set has deeper dish at rears due to lower offset/et 9 and Fronts has an et of 11.sharing the same width 7J x 14".dish has been mirror finished (Polished) while centres has been powder coated in bbs Gold Motor Sport colour. They were limited production in this combination which makes them Super Mega Rare, Made for BMW E3 E9 E12 E24 E28 & E34 with PCD 5x120,centre bore is 72.5. The Only set in UK, seen another in Germany, selling for 10K.check for yourself, personally, it's redeculas price, but being mega rare and for such a classic vehicle to finish it off, guess it's essential it's your call. Production date of wheels is 1972.there you go. Good luck all.