Challenge - GRAVEL GRINDER-PRO-H-CL-Black-260tpi-700x33

Consumer Product Safety Bulletin - March 13, 2019

Make your mark on the gravel scene with the Gravel Grinder. This tyre combines a fast rolling diamond centre with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. Colour: Black.
TPI: 260.
Weight: 425g.
Recommended Pressure: 33-55psi.
Puncture Protection: PPSGANZO + PPS2.
Rubber Compound: SMARTPLUS.
Construction: Handmade.
Series: PRO.
Size: 700c.
Width: 33mm.
Casing: SuperPoly - CORAZZAARMOR.
Bead: Folding.

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PPS Ganzo - A higher level of puncture protection utilising a multi-component fabric strip with a tighter weave that still remains flexible.
SMART Plus Compound - Gravel specific tread compound for traction and durability.

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SuperPoly polyester is a synthetic fibre stronger and softer than nylon and resistant to water. Challenge's SuperPoly casings are the more affordable handmade tyres.PRO series tyres are 220/260/300tpi depending on model. They are almost as supple as the Corespun Cotton but far softer than Nylon. The casing is impervious to water and so make the best value handmade tyres.



PPS Ganzo - A higher level of puncture protection utilising a multi-component fabric strip with a tighter weave that still remains flexible.

SuperPoly polyester is a synthetic fibre stronger and softer than nylon and resistant to water. Challenge's SuperPoly casings are the more affordable handmade tyres.PRO series tyres are 220/260/300tpi depending on model. They are almost as supple as the Corespun Cotton but far softer than Nylon. The casing is impervious to water and so make the best value handmade tyres.



Corazza Armor - Reinforced casing for gravel specific tyres utilising double layer 220/260TPI SuperPoly for durability and stability.