Challenge  Gravel Grinder Race Tire

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Color: Black
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A race-series tire crafted from vulcanized rubber, the hand-built Challenge Gravel Grinder Race tire combines a fast-rolling diamond center with knobby shoulders for when the terrain turns sketchy.


  • Tubeless-ready clincher with 120 tpi nylon casing delivers performance, durability and puncture protection
  • Puncture protection is enhanced when combined with the appropriate tubeless sealant (not included)
  • Ideal for use on hardpack, gravel, loose, sandy or rocky terrains
  • Note: Tire images shown may not reflect size/color/material options available on this page


View all Challenge Gravel Bike Tires

Technical Specs

Item #218173
Best Use

Gravel Cycling

Wheel Size


Tire Width

700C x 33 MM: 33 millimeters

700C x 42 MM: 42 millimeters

Bead Type




Thread Count Casing (tpi)

120 threads per inch

Tread Type

Semi-slick Tread

Recommended Pressure (psi)

700C x 33 MM: 90 pounds per square inch

700C x 42 MM: 60 pounds per square inch


700C x 33 MM: 365 grams

700C x 42 MM: 375 grams

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