Prime rr 35 carbon tubular road wheelsetthe prime rr 38 carbon tubular road wheelset is the perfect partner for those looking for one wheelset to cover any situation on any terrain our 35mm deep aero rim profile offers increased speed for less physical input by increasing the aerodynamic benefits across a wide range of yaw angles our 25mm wide rim profile is optimised for use with wider tyres ranging from 25c to 33c for road use 25c to 30c tyres can easily be accommodated with our preference s