Challenge Gravel Grinder Race 700x38c Folding CX Clincher Tyre Black

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RRP: $89.95

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Challenge Gravel Grinder Race 700x38c Folding CX Clincher Tyre Black

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It's so easy to express excitement about a product once it meets your own personal approval standards and, like many other riders, we're sure you will agree that these are quite possibly the best, fast-gravel racer/commuter tyres you can get right now that are capable of handling all road surfaces.
Developed with longer hard-pack and loose gravel races in mind, the tyre is made with vulcanized natural rubber for more suppleness and grip than stiffer artificial rubber. Its high volume also contributes to a plush ride while increasing durability compared to Challenge's other gravel-minded options. The Gravel Grinder features a centre file tread paired with raised side knobs for low rolling resistance on the straights and confident traction when cornering.
Italian-designed, these tyres expect -- and encourage -- rough riding conditions and feature a nylon casing reinforced with the Challenge Puncture Protection System (PPS) to get you through your rides and races without losing time changing flats. The Gravel Grinder fits on most rims measuring between 17 and 23mm wide (though its healthy girth recommends it most on the wide end of that spectrum), and weighs in at a claimed 375g.
• Vulcanised construction easily handles rough riding conditions
• Fast feeling, smooth rolling tyre
• Helps to keep the bike floating up and over the rocks instead of pinging them off all over the place
• Gives the rider a great, controllable feel in looser gravel
• Type: Tube Type Clincher (folding)
• Bead: Aramid
• Casing: Nylon
• Tyre Size: 700 mm
• Tyre Width: 38 mm
• Rim Width: 17-23 mm
• ETRTO: 38-622
• Material: 120 tpi construction
• PSI: 45-80 (min-max)
• Bar: 3-5.5
• Colour: Black-Black
• Compound: Natural rubber
• Puncture protection: Puncture Protection System (PPS)
• Weight: 375 g
• Tyres sold separately. Purchase buys one (1) tyre
• Style: Gravel | Cyclocross | Race
SKU# C/019384
Package ID: Small_Package

Customer Reviews

Very very good hardpack and sand tyre Review by SilentbutDeadly

First thing...Challenge call this a 38 but it measures 35 in width when inflated to 45psi on a 109 mm internal width rim. It does however stand taller and rounder than any other 35 mm tyre I've seen.
The result is that on hard surfaces it provides low rolling resistance and on soft over hard pack it digs through the soft to find have excellent stability and you can still make progress! I hit tank slapper dusty sand at 35 kmh and was able to simply coast down through it and slaloming with control to a speed that didn't risk an over the bar moment.
The side knobs are the key...they look so far away from the surface but as the tyre deforms on the way round under you they grab the riding surface and give it a flick. Better still...when you lean over they take hold of any slide and allow you to right yourself when things go too far.
The casing is probably the most comfortable I've come across in a clincher and beuatifully made too so the tyre mounts and runs very true.
Expensive but outstanding so far...
My only caveat is over their longevity which I have yet to really test...

(Posted on 23/03/2016)