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I'd also add an important point - never replace a punctured tube without thoroughly checking the inside of your tire for sharp objects. You'll likely only make this mistake once.

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I've never really found a good way to check - visual check can miss things, running your hand around the inside works but you're liable to get something such in your hand! Wiping a around can work. But I've not come up with anything better? Maybe a tissue, or microfibre cloth will snag more easily and avoid missing something?

I take the chance and run my hand on the inside. Gloves should usually work well too, though I use fingerless on road.

For off-road riding (cross) I pinch flat almost exclusively so I don’t bother checking around. It is pretty obvious when you smack a root or rock.

I am often still wearing my biking gloves anyways, so I run my hand around inside, and then toss them in the wash when I get home.

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