I bought a pair of Mavic Ksyrium wheels 25 mm (tyres included) and have to say I've been hugely impressed. Apart that is from the tyres...
A few months after buying them I noticed a huge bulge in the tyre wall of my front tyre. It was about 2" long. I thought I must have damaged it, so replaced it, only to find a week later that the back tyre went the same way. A friend who had bought a pair about one month before experienced the same thing with one of his wheels, though he'd bought from a different outlet. Maybe a bad batch...?
I took mine back to the shop - their only suggestion was that I'd over-pressurised it. I don't have an air-shot, just a track pump, so was sure this couldn't be the case. I therefore bought two more tyres, and a digital pressure gauge.
The digital pressure-gauge confirms the one on my track pump is very accurate. Since then, I've pumped the tyres up to 70 psi at a normal speed, then slowly take them up to 80-psi. I can honestly say that the tyre pressure has never gone above 85 psi (I weigh 85kg, so think that's about right...).
And this weekend, I get the same thing on my rear tyre. The tyres look as good as new, apart from the bulge. Whilst the tyre is as hard as you'd expect for one pumped up to 80psi, the bubble on the tyre wall is really soft. It's as if a very thin outer layer of the tyre has separated from the inner material.
I don't have disc-brakes...the brake blocks certainly aren't rubbing the tyre.
Is this a common theme with these tyres? If yes, then what's a better alternative (bearing in mind, these tyres were designed for this wheel).
A few months after buying them I noticed a huge bulge in the tyre wall of my front tyre. It was about 2" long. I thought I must have damaged it, so replaced it, only to find a week later that the back tyre went the same way. A friend who had bought a pair about one month before experienced the same thing with one of his wheels, though he'd bought from a different outlet. Maybe a bad batch...?
I took mine back to the shop - their only suggestion was that I'd over-pressurised it. I don't have an air-shot, just a track pump, so was sure this couldn't be the case. I therefore bought two more tyres, and a digital pressure gauge.
The digital pressure-gauge confirms the one on my track pump is very accurate. Since then, I've pumped the tyres up to 70 psi at a normal speed, then slowly take them up to 80-psi. I can honestly say that the tyre pressure has never gone above 85 psi (I weigh 85kg, so think that's about right...).
And this weekend, I get the same thing on my rear tyre. The tyres look as good as new, apart from the bulge. Whilst the tyre is as hard as you'd expect for one pumped up to 80psi, the bubble on the tyre wall is really soft. It's as if a very thin outer layer of the tyre has separated from the inner material.
I don't have disc-brakes...the brake blocks certainly aren't rubbing the tyre.
Is this a common theme with these tyres? If yes, then what's a better alternative (bearing in mind, these tyres were designed for this wheel).
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