Hi all, I'm a Newbie to the Z4 and this Forum and loving both already. Will submit some piccies as soon as the weather clears. My 2.5 currently has a lovely set of 107s shod with Bridgestone Potenza 225/40R 18 (F) and 255/35R 18 (R). Very good on the rears and part worn on the fronts. These are the RFTs and are giving the car quite a firm ride with a degree of tramlining. I would like to fit a set of 106s or 133s with 225/45R 17 at both ends (not RFTs). Does anybody have a suitable set to sell or, better still, trade? Am I doing the right thing? Your advice is most welcomed. Pictures soon, I promise. 