Hi, if I'm lucky, I'll have a chance tomorrow to buy a set of '99 M5 wheels complete with tyres. Now my question is will the hub reducers be enough for these wheels to fit my 540? I think the tyres may be too big though. The fronts are 245x40ZR18s which will fit, but the backs are, 275x40ZR18. I can change those. If the wheels won't fit, I may buy them anyway as the price is 550 British Pounds (about $850 current exchange rate) and then sell them on eBay ;)