My son-in-law did the shocks. I bought my roxor used and the prior owner did some kind of mild lift and adjusted the bump stops just a bit. The tires (255x85x16) do not rub at all. My son-in-law is a mechanic and he measured the spacing carefully and bought Bilsteins that fit my roxor right. By the way, the OEM shocks were absolute crap -- zero rebound and useless. So, in my case, it was easy to improve the ride!