GRAVEL GRINDER Pro - Handmade ClincherMulti Purpose with Bite Gravel Grinder is for cruising at speed and cornering with more confidence in soft and wet conditions. The diamond center tread clears dirt and mud and grips grass and sand while the wide spaced side knobs hook soft ground for traction and help guide the tire through ruts. The mixed tread offers solid rolling resistance with a bit more cornering grip. This handmade PRO version combines a supple Super Polyester casing with our

The Gravine is the most aggressive tread of the Challenge line-up

Our most popular gravel tire is designed to handle hardpack

It minimizes the chance of pinching the inner tube during installation and the material avoids scratching your beautiful wheels during use

TEST: Bicycle Rolling Resistance 4

5/5 "Highly Recommended" (40c)

Weight (+/- 10%) 48mm Stem = 24-32C 60g

This Handmade PRO version combines a supple Super Polyester casing with our SMARTprime tread compound

TEST: Bicycle Rolling Resistance 5/5 "Highly Recommended" (36c)

320TPI sealed corespun cotton casing with natural rubber SmartSoft Compound tread and a Latex Inner Tube with 48mm valve stem

Stay warm and race-ready with the Challenge Bobble Hat – 2026 Limited Edition

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