Cannonball is a go-to gravel race tire for normal conditions. The tread pattern features a directional, tight-knit center tread that sheds dirt and debris to decrease rolling resistance, and side knobs for effective cornering traction. Cannonball is built for all-around gravel riders and racers.Tubeless ready for flat prevention, lower-pressure traction and comfortDurable casing protects against abrasion and sharp trail debrisIdeal rim width: 23 mmFast compound minimizes rolling resistance and maintains abrasion resistanceAlways check with your rim manufacturer to verify rim & tire compatibility before assembly or useItem SpecificationsColorBlackDefined ColorBlackFlat ProtectionTread and SidewallISO Diameter584 / 650b / 27.5"ISO Width (mm)40Labeled Size650b x 40PSI70Tire BeadFoldingTire Diameter650bTire Intended UseGravelTire TypeTubeless Ready ClincherTPI60