The Reserve 27 is designed for the way most people ride—a bit of up, a bit of down, and a lot of miles in between. The narrower width pairs well with a wide range of tires, from 2.0 to 2.5, depending on your preference for tire profile. It’s a bit lighter than the Reserve 30, and the beads are slightly thinner. It’s tough, but designed for less all-out aggressive riding than the 30 or the DH. This wheel is not compatible with Ebikes.