Challenge Gravel Grinder Tire

Color: Black
Size: 700C x 38 MM
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Intended for all-around riding, as well as excursions on dirt and gravel roads, the Challenge Gravel Grinder tire comes equipped with a file tread center and a knobbier shoulder tread.


  • File tread center pattern offers low rolling resistance on smoother terrain and increased grip when the road gets rough
  • Shoulder tread is more aggressive for corner confidence and additional control when the terrain gets soft, muddy or a bit sketchy
  • Ideal for hard-pack dirt, gravel, sand, and loose and rocky terrain
  • Note: Tire images shown may not reflect size/color/material options available on this page


View all Challenge Gravel Bike Tires

Technical Specs

Best Use

Gravel Cycling

Wheel Size


Tire Width

38 millimeters

Bead Type




Thread Count Casing (tpi)

120 threads per inch

Tread Type

Semi-slick Tread

Recommended Pressure (psi)

32-53 pounds per square inch


375 grams

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