bike wrench

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A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

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Inner tubes... go big or go small? (lemmy.ca)

submitted 5 months ago by [email protected] to c/bikewrench

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I've got 32mm wide tires on my road/gravel bike. Currently looking at TPU tubes and I've got two options:

32-47mm
18-32mm

So, is it better to get one over the other, or will they both work equally well? Never used TPU tubes before, so I wouldn't even have a reference to compare these.

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[–] [email protected] 2 points 5 months ago (1 children)

However, why are you getting into TPU? If it’s for weight or rolling resistance, then definitely run the smaller tube.

Apparently, they offer much lower rolling resistance, much lower weight, are way more compact (on bike repair kit), and should be more durable, too.

Surely there’s another brand of tubes with a better size range? That’s my best answer tbh.

I'll keep looking, but apparently this particular brand of (rather inexpensive) tubes are extremely popular and came recommended by someone in a riding group I was in.

[–] suchwin 1 points 5 months ago

Based off all that, I'd run the 18-32. Besides, assuming you're not buying in bulk, and you're not doing rural bike-packing, then getting a flat or other mechanical won't be too catastrophic or costly. Try em out a lil, and report back on how you like them :)