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Tires and Tubes > Road Tires > Gravel Tires

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Challenge Gravel Grinder Race TLR 650b Tire
Challenge Gravel Grinder Race TLR 650b Tire
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Challenge Gravel Grinder Race TLR 650b Tire 1
Challenge Gravel Grinder Race TLR 650b Tire 2

Challenge Gravel Grinder Race TLR 650b Tire

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Mfg PartNum: 02029
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Grind Gravel With Confidence

The Challenge Gravel Grinder Race TLR 650b Tire combines a fast-rolling diamond center with aggressive shoulder knobs that only bite when the terrain gets soft, muddy, or a bit sketchy.

With the 650B rim diameter, these tires allow you to feel more nimble on the dirt, and with the wide 46mm width you don't have to worry about bumps and rocks being too much for your bike.

While many of Challenge's previous tires are right at home on gravel, they wanted this one to be specially tailored for longer, more demanding rides where tire width and flat protection are at a premium. To this end, they gave the Gravel Grinder Race their Double Puncture Protection System (PPS2) resulting in great durability and dependability with comfort and stability on uneven and loose terrain. With file tread in the center, the Gravel Grinder roles smoothly, but still grips turns thanks to its more aggressive shoulder knobs.


  • Tubeless-ready
  • Extremely supple 120TPI Nylon Superlight casing
  • Attractive brown sidewall
  • Fast-rolling diamond center tread
  • Aggressive shoulder knobs

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.


Wheel Size: 650B (ISO 584) 

Tire Width: 46mm (1.8in) 

Tire Type: Tubeless Ready 

Threads Per Inch: 120 

Mfg PartNum: 02029 

Mechanic's Corner

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A guide to bicycle tire sizes, both standard on newer bikes and common on older bikes.
Understanding older bicycle tire sizes.
A useful chart for determining the tire size you need for your bicycle.
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Tips for proper bicycle tire mounting and tire safety.
A guide to understanding tire width.
A guide to understanding bicycle tire tread patterns and what you should look for.
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