As per title, just fitted some tyre to some 700c 50mm deep carbon clinchers and as I got them up to pressure, it sounded like there were a few creaks and cracking noises.

I’m assuming this is just the equivalent of the twangs and pops you hear when the bead seats on a metal rim?

Probably just the tyre seating or the spokes un tensioning or moving a little perhaps.

That’s what I thought too. They’re from a UK supplier, so I’m not too worried, just checking.

Creaking is a little odd, sure it’s nothing to be worried about, but not common.

Yep, a kind of twang-come-crack, the first time the tyres have been fitted on the rims.

Did read relatively recently that tight beads on a tyre can de-tension the spokes. Can’t remember the full argument around it though.

Twang-come-crack is more normal – that sounds like tyre beads settling. Creak implied prolonged to me.

Twang-come-crack

Sounds like a village in Somerset.

Thanks Boxfish….I have to say I did hesitate to use the phrase ‘twang-come-crack’ 😉

Yep,Njee, it was a few random crack…crack…twang…..silence…. Did sound akin to a tyre seating on a metal rim but (perhaps unsurprisingly) plastic-y and as though something was almost snapping.

I read somewhere that carbon clinchers should be kept with the tyre deflated when not in use. Anyone else heard this?

Nope only high end track tires ( ultra high pressure and no sidewall protection) need to be stored deflated.

Even thats only because brushing a sharp object st the ultra high psi can maye the tensioned fibres let go.

Cool, I’ve left them pumped up anyhow for now.

Yep, no reason to deflate them.

Sounds like spoke wind-up settling. Shouldn’t happen on a well built wheel.