Prime ct 35 tubular road rimthe prime ct 35 carbon tubular road rim has been designed for use with standard caliper rim brakes and features our high tg resin 3k brake track with a textured surface for enhanced all weather braking performance our 25mm wide rim profile is optimised for use with wider tyres ranging from 25c to 33c for optimum braking performance we recommend you only use prime carbon pro brake pads the use of wider tyres offer many benefits a wider contact patch for increased tra