looking for a set of r888 already on 15" alloys and this one's interesting

http://www.ebay.co.uk/itm/BMW-E30-BBS-15-x-7-Alloy-Wheels-x-6-Toyo-R888-195-50-R15-Tyres-VW-Vauxhall-MX5-/160785120858?pt=UK_CarParts_Acc_Wheels_tyres_Rims_Car_Wheels_ET&hash=item256f8a3e5a
but the offsets too small, prefer ET40-47, centre bore will need machining from 57 to 59mm, tis a huge initial cost and at the other end of the world.
at £420 & petrol cost its bout £70+ per wheel. says treads at 3-4mm, believe they're 5mm new.
suppose i could get tyre shop to remove the 6 r888s off the BBS alloys, sell the 6 BBS alloys, buy correct size pair of alloys and fit the r888 on em. with 6 tyres, thats like 3 sets of r888s for the fronts.