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  1. Same happening with mine, seems like quality issues on bontrager side. This happened with stock tyre mounted on my trek fx3 also. Going to look for a other manufacturer tommorow.

  2. Honestly, if you’re worried, speak to a Trek reseller and goes from there.

  3. I have seen quite a few Bontrager tyres like that since Trek bought them out my advise would always be to talk to wherever you got the tyres from.

    On a side note see those diagonal stryations on the sidewall? They tell me that you have used the tyre under it’s minimum inflation pressure and this has started to cause a degree of damage to the sidewall.

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