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Challenge Gravel Grinder PRO TLR Tire Tanwall
Challenge Gravel Grinder PRO TLR Tire Tanwall
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Challenge Gravel Grinder PRO TLR Tire Tanwall
Challenge Gravel Grinder PRO TLR Tire Tanwall

Gravel Grinder PRO TLR Tire

Mfg PartNum:
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Your Gravel Grinding Companion

Challenge Gravel Grinder Pro TLR Tire combines a fast-rolling diamond center with aggressive shoulder knobs that only hook up when the terrain gets soft, muddy, or a bit sketchy.

This handmade clincher combines a supple, 260TPI SuperPoly casing with natural rubber tread for long-distance comfort, confident cornering, and quick handing.

It also includes PPS2, a combination of Challenge's sub-tread Puncture Protection System, and an additional layer inside the casing to increase resistance to punctures.


  • Casing: SuperPoly Corazza Armor
  • Bead Type: Aramid
  • Protection: PPS2
  • Tubeless-Ready
  • 260 Threads Per Inch

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Tire Type: Tubeless Ready 


Threads Per Inch: 260 


Wheel Size: 700C/29" (ISO 622) 

700 x 33mm - Tanwall

Tire Width: 33mm (1.3in) 

Mfg PartNum: 00537 

700 x 36mm - Tanwall

Mfg PartNum: 00532 

Tire Width: 36mm (1.4in) 

700 x 40mm - Black

Mfg PartNum: 00539 

700 x 40mm - Tan

Mfg PartNum: 00534 

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Super Happy with these tires
by braytd1
Cycling Enthusiast
Santa Rosa, CA

Very nice tire. They provide a great ride--supple and compliant. They are the nicest gravel tire I've owned. However, they are a pain in the ass to install. You almost certain will need another set of hands and tire levers to get these things on the rim.

Reviewed 6/11/2022
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