• These things are dumb right?

    Just bought a second hand pair of wheels and after much swearing and fighting removed the tyres that were fitted to find this thing lurking inside. Expensive pieces of foam that absorb all your sealant? Or genuinely useful?

    Would never buy these but I've got em now...


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  • @leggy_blonde has them, does mad skids

  • foam that absorb all your sealant?

    Shouldn't do that as they're closed-cell.

  • They supposedly can help your tyre stay seated if you have a massive blow out (see some of the explosions at paris-roubaix this year where riders didn't use them). You're meant to be able to ride home on them too but would be quite rough.

    My limited experience with them also seems to suggest that bigger holes seal up slightly better as they stop all the air rushing out in one go (less air rush gives the sealant more chance to block the hole).

  • I’ll take them if you don’t want them.

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