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@bombcup
Your advice please; this is a michelin pro4 service course which has covered only 50 miles. I don't like the look of the cracking in the picture, it's the same all round and the rear tyre is the same. The bike is always stored hanging up and it has never been left with deflated tyres.
Is this a defect? Should I be worried about it? Is this normal for performance orientated tyres?
I'm riding in the Peak District tomorrow and I'm likely to encounter the fastest descents I've experienced so far and these tyres are making me nervous. What does anyone reckon?