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Old tire bead incredibly sharp. Cut my finger fairly deep.

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Old tire bead incredibly sharp. Cut my finger fairly deep.

Old 04-27-18, 05:08 PM
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Old tire bead incredibly sharp. Cut my finger fairly deep.

I had a very cheap 4 year-old set of tires sitting around, & not being ridden. They had come with a Walmart bike & after a couple of flats I upgraded to a set of Continentals, & no flats since!

But today, as I was sorting through those old tires I sliced my finger pretty badly on the inside edge (by the bead), which had gotten hard over the years & thus very sharp.

Is this common with bike tires generally as they sit unused, or is it just something that happens to cheap-o tires?

I threw that set out, but I'm wondering if I need to be careful with better quality spare tires I may have laying around in the future. Also, I'm just a little curious.

Thanks in advance for sharing your experiences.
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Old 04-28-18, 07:46 AM
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Been there, done this. various tires are more likely to allow this potential as they age. I don't think anyone has tried to list or document this so it's a crap shoot. Experienced (those with the scars to show) take care until proven safe/soft/less sharp.

A tangent are the steel rims that have the chrome plate flaking/lifting off. Spin one of these wheels and watch for all those razor blades... Andy
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Old 04-28-18, 08:24 AM
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As a mechanic I used to check for debris poking through the inside of tires with my fingers instead of a cloth. Not sure why I thought that was a good idea. There are numerous potential hazards when working on a bike - just have to be careful.
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Old 04-29-18, 06:06 AM
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Duplicate thread.

Old tire bead incredibly sharp. Cut my finger fairly deep.
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Old 04-29-18, 12:35 PM
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Speaking of which, who the heck makes the tires that are branded for Bontrager? I've had an insane number of 10+ year old Bontrager tires come through here without the slightest sign of rot or stiffening. One was a front on a Trek that had a rotten Conti on the back; tread was worn, but the front tire was still soft and the sidewalls looked brand new. Guy said it was original to the mid-90s bike and the Conti was just a couple years old.
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Old 04-29-18, 01:01 PM
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if the tyre is loose enough to remove it off the rim bead by hand, i'll check first [or feel] to see if there isn't a sharp edge, some old tyres will just dry up over the years
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Old 04-30-18, 11:30 AM
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haven't had that problem but you reminded me of this problem

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Old 04-30-18, 11:35 AM
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Not an issue with folding bead tires.
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