The WTB Course 52 sits in the middle of WTB's new wide-gravel range, balancing speed with more traction for mixed surfaces. Its tightly grouped center tread keeps rolling resistance in check, while the round profile and more pronounced transition and shoulder knobs stay predictable through loose-over-hard corners and changing gravel conditions. A supple 120 TPI TCS Light casing, Dual DNA rubber, and SG2 bead-to-bead puncture protection give the Course a practical mix of ride quality, grip, and durability. Patent-pending trip strips and vortex generators developed with Stromm manage airflow around the wheel-and-tire system to help reduce drag at higher speeds. The profile is optimized around a 28 mm internal rim, with a recommended range of 25-30 mm. Best For: Fast, varied gravel where rolling speed and dependable traction both matter Tread: Tightly grouped center tread with a round, versatile cornering profile Casing: TCS Light/Fast Rolling, 120 TPI Protection: SG2 bead-to-bead puncture protection Compound: Dual DNA Rim Fit: Optimized around a 28 mm internal rim Aero Features: Patent-pending Stromm trip strips and vortex generators Item SpecificationsColorBlackDefined ColorBlackIntended UseAdventure Road / GravelConditionsHardpack / Loose-Over-Hard / Dirt / GravelISO Size52-622Labeled Size700 x 52cTire TypeTubeless Ready ClincherTire BeadFoldingCasingTCS Light/Fast RollingTPI120CompoundDual DNAPuncture ProtectionSG2 bead-to-beadWeight645 gOptimal Internal Rim Width25-30 mmGMS52/50 WTB Course Tires UPC: 714401111318 MPN: W010-1131