Stumbled on this forum trying to figure out a back end wobble I now have after putting new rims on my 15 RG special. Wheels are spaced correct and belt is tightened properly. Since putting the 18" rear on, the bike now starts to sway back and forth only at speeds of 70+mph. The downforce from the front fairing is now making the back end of my bike light. I put a 1" lowering kit on and it improved but didn't get rid of it entirely. The shock part numbers are different. Anyone have any idea if the new bikes have different length shocks from a 2015? I'm really wanting to keep on the new wheels but if I can't get my bike back to riding like it did i'll have to go back to the old wheels. Thanks for any help.