Repeated punchy climbs on a dry, chunky course reward a wheelset that stays stiff and holds its line, and the 30 XC DT 350 DF Carbon 32in Boost Wheelset is a carbon cross-country wheelset made for that work. The 32in size has a rim profile of its own, separate from the 29in, which balances weight and stiffness for the larger diameter. A 30mm inner width lines the tire sidewall up with the rim bead, which adds support and grip when the trail gets rough. What Our Gearhead(R) Experts Are Saying:"Hub spacing is the first check I make, and this wheelset uses Boost. The freehub is XD, so an XD cassette goes straight on. Rotors mount with six bolts, and tires from 2. 2 to 2. 5 inches are the range to stay inside."