Challenge Gravel Grinder Pro Tire

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With a fast-rolling diamond center and aggressive shoulder knobs, the hand-built Challenge Gravel Grinder Pro tubeless tire delivers traction and ride quality—even when the terrain turns sketchy.

  • Features

    • Handmade tire combine many attributes for comfort and low rolling resistance
    • PPS2 is a Puncture Protection System placed between the tread and casing—plus an additional layer inside the casing—to increase puncture resistance
    • Puncture protection is enhanced when combined with the appropriate tubeless sealant (not included)
    • Gravel-specific SuperPoly Corazza Armor casing uses a double SuperPoly layer for durability and stability
    • Ideal for use on hardpack, gravel, loose, sandy or rocky terrains


    View all Challenge Road Bike Tires
  • Technical Specs

    Best Use

    Gravel Cycling

    Wheel Size


    Tire Width

    700C x 33 MM: 33 millimeters

    700C x 36 MM: 36 millimeters

    Foldable Tires




    Thread Count Casing (tpi)

    260 threads per inch

    Tread Type

    Semi-slick Tread

    Bead Type


    Recommended Pressure (psi)

    30-50 pounds per square inch



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