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  1. Feisty_Park1424 on

    Challenge tyres are aptly named! It’s normal for lightweight tyres like this to leak on installation and will seal up in an hour or so. Or has this started to happen after 5 months of use?

  2. Have you been running them since august and they are just starting to do that? Challenge tires have a habit coming apart just were your white stuff is coming from. They will warranty them quickly. That happened to me 25 miles in the woods and my spare tire had a hole. Never again.

  3. I had victoria pro tire doing this after only 2000km.

    This look a lot alike.

    You can put them in the bin and buy gp5000 tr S instead. This is what I did

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