I too wanted to go with 255/85-16's on my Duramax. I want taller without going wider. Due to Chebby's infinite wisdom with frontend design
, anything wider than 265 rubs with out significant lift. However I already have traction problems with 265's, so 255's would only make that worse. One would think with the newer trucks sitting lower (4 X 4) and having closer front geometry tolerances, that more companies would be making 255/85's. In actuality, a 265/85-16 would be perfect for me. But then again they didn't ask me...
Tom