DT Swiss XRC 1501 Spline One 30 Carbon 29" Boost Tubeless Ready

Tailored to the demands of cross-country professionals, the XRC 1501 Spline One leaves nothing to be desired. The lightweight, 30mm-wide carbon rims offer ideal support for modern cross-country tires. Rolling on race-proven, super-strong 240 hubs with the Ratchet Exp system, every ounce of energy is transferred forward through equally aggressive spokes and a perfect wheel construction.

Why Wide?
A wider rim provides better tire support which allows for lower pressure and leads to less rolling resistance on rough trails.
Cross Country wheels are designed for speed, which means reducing drag wherever possible. On rough surfaces, rolling resistance can be up to 69% of total resistance.
Rolling resistance is defined as: rolling resistance coefficient x weight x gravitational acceleration. The coefficient is determined by the wheel size, tire cross-section, tire characteristics, tire pressure, tread pattern, and terrain.
While most of these factors cannot be influenced by the wheel, we can modify the tire mount.
A wider rim provides better tire support which allows for lower pressure and leads to less rolling resistance on rough trails.
When cornering, lateral forces act on the tire. The tire's contact patch moves in the opposite direction to the lateral force.
When cornering with a narrow rim, the tire's contact patch is no longer above the narrow rim flange. The tire is no longer supported by the rim and flexes, resulting in unstable handling. This flex creates tension on the tire, which pulls on the opposite bead and causes air to leak between the tire bead and the rim bed, a condition known as tire burp.
The contact patch of a wide rim's tire is located inside the rim flanges. The tire's sidewall is supported by the wide rim, increasing control. A wider rim can therefore be mounted with lower air pressure than a narrower rim.
A wheel with low tire pressure will roll better on rough surfaces than one with high pressure, as the tire can adapt better to the terrain. A wheel with high air pressure cannot absorb obstacles, and the bike must move upward, comparable to lifting, which increases rolling resistance. Lower air pressure leads to less fatigue, because the cyclist also has less lifting to do.

• Rim: Clincher.
• Internal width: 30 mm.
• External width: 36 mm.
• Maximum weight: 110 kg.
• Hub: DT Swiss 240.
• Hub size: 110mm Boost (front) / 148mm Boost (rear).
• Body: Sram XD MTB (ASRAM)
• Freewheel Technology: Ratchet EXP 36
• Nipples: DT ProLock Squorx ProHead alu
• Spokes: DT competition® race straight
• Spoke pattern: 3-cross (1:1).
• Actual weight: 738g (front) / 828g (rear).
• ASTM Classification: 3.