30 MM INNER WIDTH
LESS ROLLING RESISTANCE
Cross Country wheels are made to be fast and this makes it necessary to reduce resistance where possible. On a rough surface, rolling resistance can be up to 69 % of total resistance.
Rolling resistance is defined as: rolling resistance coefficient x weight x gravitational acceleration. Whereas the coefficient is defined by the wheel size; tire section; tire characteristics, tire pressure, tread, soil.
While most of those factors cannot be influenced by the wheel, we can modify the tire support.
A wider rim provides improved tire support which allows lower pressure and leads to less rolling resistance on rough tracks.