Quote:
Originally Posted by RichieRich
I've used undersized tubes before... ie 18-23mm tube on a 25 and even 28mm tire. It just stretches the rubber beyond what the manufacturer says is the sweet spot and so it might fail.
As for too many flats... you gotta look at other factors primarily your tire choice and pressure and where and how you ride.
Typically the rim inside width is less than the tire width, although over the past couple of years with all the marginal aero gains and tubeless stuff we are seeing wider rim widths on both road and mtb.
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What brand of tubes are you using....I ask because MEC tubes were getting slaughtered on their reviews for being garbage. Personal experience confirms this. I switched to Continental tubes about 4 years ago and have had no out of the ordinary problems.