Challenge Tires Gravel Grinder Race Open Tubular Tire

Challenges Gravel Grinder Race Open Tubular is the tire you need to make your mark in the gravel racing scene. It pairs Challenge's unbelievable open tubular casing with the easy install of a clincher. A smooth-rolling center tread and aggressive shoulder knobs provide great riding characteristics, high speeds, and excellent cornering traction.

- Use: All Around Gravel
- Size: 28"
- Tire Width: 36 mm
- Rim Width: 17-23 mm
- Weight: 355 gr
- TPI: 260
- Bead: Aramid
- Casing: SuperPoly
- Flat protection: Double PPS
- BAR: 3-9
- PSI: 45-130
- Color: Black-Black