I'm just about to receive a RRS 2015 model. I have purchased a set of Kahn wheels with a 50mm off set which is the same as oe fit. I have subsequently found out that I could have bought some with a 35mm off set which would have enhanced the wheel base. my question is does anyone have a contact for 15mm stud spacers to suit. it's a 72.6 centre spigot with 14x1.5 studs on a 5-120 PCD. I'm told it's not safe just to extend the original studs and use a 15mm spacer. all I can seem to find in stud spacer style are 25mm which is too high. Rgds Chris