DHF WT EXO vs DHF DH case (no WT) Both are 2.5" mounted on rims with same internal width.. The WT is a bit larger volume and the knobs are further apart. The knobs on the DH case 2.5" don't stick out on the sides as much as the WT. I wish they made a WT version in DH case as well, it's a great tire even on 25mm rims.