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.


Handmade quality

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)

TPI: 120

Bead: Aramid (folding)

Puncture protection: Puncture Protection System (PPS)

Casing: Nylon

Inflation range - BAR: 3-5.5

Inflation range - PSI: 45-80

Color: Black , Black/Brown

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