The Challenge Gravel Grinder tyre is designed to take on gravel roads to deliver a secure performance.
Created to inspire off road confidence, the knobs of tread on the edges of the tyre hold tight to the ground and the low profile centre decreases rolling resistance for efficient pedalling.
Designed for all round gravel
Tread pattern designed to increase grip and inspire confidence in loose gravel conditions
Size: 28" (700C)
Tire width: 33 mm , 38 mm
Optimized for use with rim width: (15-19 mm ,33mm ) , (17-23mm , 38mm )
Weight: (365g , 33mm) , (375g , 38 mm)
Bead: Aramid (folding)
Puncture protection: Puncture Protection System (PPS)
Inflation range - BAR: 3-5.5
Inflation range - PSI: 45-80
Color: Black , Black/Brown
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