I have a WTB Weirwolf 2.5 55/62 (front w/ DNA rubber compound) and a Weirwolf 2.55 LT 58/55(rear w/ DNA rubber compound). Are these a 2 ply tire? They feel much lighter then my Nevegals (which I know are a heavy tire). I want to try them out just looking for some feedback first. Reviews seem good but will they be good for DH/FR? Thanx for any help and advice!