Reviews over the

Challenge Pro Cross & Gravel Seamless Latex

Very nice tyres. Much easier to fit than butyl tyres. Been riding with these for two years and never had a puncture. However, the valve head does break off after a while. This has happened 4 times already. Then the tyre can no longer be inflated and has to be replaced. Point of attention for Challenge.

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Very satisfied, sorry that one tyre turned out to be flat after inflating.

Pros & Cons

These inner tubes ride great and you have more grip. I ride them icm with Challenge Grifo folding tyres. Last winter, I toured smoothly with a tyre pressure of around 3 - 3.5 bar (weight 70 kg). However, I have one problem with these tyres: now that the cross season has reopened, I have already had two punctures with a tyre pressure of around 2.2/2.5 bar. Where the punctures came from then is a mystery to me because I didn't see an obvious puncture and therefore couldn't remember that anything could have caused the puncture. I later read in on the blog website fiets.nl a comment from someone that I do share: "The Challenge Grifo are already very supple. With latex bibas, they are even more supple, but experience shows that they then sometimes become too supple and the inner tube can get between outer tyre and rim." I can concur with this. So I recommend them for gravel rides because they ride and steer many times better than rubber tubes but be careful with the low tyre pressure. PS: while laying the inner tube, check very carefully that they don't get between the rim and outer tyre. This is where the red colour helps a lot.

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Gravel ride with it in combination with challenge griffo 33 mm. Feel nice and supple and no punctures so far

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I boughT five of these latex tubes I readiness for this years National Trophy CX season. I learnt very quickly not to over inflate the tube before fitting as a bubble formed near the valve which made a the tube a bit too baggy - so be really careful. Performance-wise I can’t fault them. Yes the leak air so you need to ensure exactly what pressures they are at before you race - don’t rely on pressures from the night before as they will have gone down. They are super light and allow you to run low tyres pressures with your open tubulars - not quite as good feeling as tubs, but as good as you are going to get with clinchers.

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good quality inner tubes good resistance to pinch flats

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Great tube producing a comfortable ride

Having never used latex tubes before I was surprised how great the feel of the ride was. They loose pressure after 2-3 days but this was expected so it's no problem to put a bit of air in. Highly recommended

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