![Challenge Gravel Grinder review: An unpredictable tyre, yet despite the low score I still like them | Cyclingnews Challenge Gravel Grinder review: An unpredictable tyre, yet despite the low score I still like them | Cyclingnews](https://cdn.mos.cms.futurecdn.net/B7uxubJJNe7BsqeFGPYgZF.jpg)
Challenge Gravel Grinder review: An unpredictable tyre, yet despite the low score I still like them | Cyclingnews
![Challenge launched a handmade tubeless-ready version of the Gravel Grinder gravel tire today. © Challenge Tires - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media Challenge launched a handmade tubeless-ready version of the Gravel Grinder gravel tire today. © Challenge Tires - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media](https://www.cxmagazine.com/wp-content/uploads/2019/09/Challenge-54383.jpg)
Challenge launched a handmade tubeless-ready version of the Gravel Grinder gravel tire today. © Challenge Tires - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
![Amazon.com : Challenge, Gravel Grinder Race, Tire, 700x38C, Folding, Clincher, Vulcanized, Nylon, 120TPI, Black : Sports & Outdoors Amazon.com : Challenge, Gravel Grinder Race, Tire, 700x38C, Folding, Clincher, Vulcanized, Nylon, 120TPI, Black : Sports & Outdoors](https://m.media-amazon.com/images/I/81okSEIDDVL._AC_UF1000,1000_QL80_.jpg)