As titled. I have a '10 cayman s with the 18" cayman ii wheels, I'm planning on upgrading to a set of ruf rg5 wheels to accomodate my upgraded brembos. Would also like to lower the car by 30mm. There's a set of rufs on special offer but they're intended for the carrera (8.5 wide fronts et56, 11" rear et71). I would like to know if they'll fit correctly with the right spacers, cuz I don't want the tyres to rub.