Can leaving your bike in the sun cause a puncture?

[slowmotion]

PV=nRT or something.

A black tyre in the sun can get too hot to touch but I doubt the delta V would be enough to pop it.
BTW, I think the T term is in Kelvins. Is that correct?

 

[jefmcg]

Yes, Kelvin.

If it was 10 degrees when you pumped the tyres up, and the tyres reached the 75C suggested above, the pressure would go up about 23%, say from 120 to 150 PSI.

That could definitely cause a blowout.

 

[slowmotion]

Yes, Kelvin.

If it was 10 degrees when you pumped the tyres up, and the tyres reached the 75C suggested above, the pressure would go up about 23%, say from 120 to 150 PSI.

That could definitely cause a blowout.

Not in a container that can expand flexibly, surely? V can change as the T and P rises, I think.

 

[Gravity Aided]

V has its limits, depending on material and deformation of container as T and P rise, I should think. Perhaps hence the bang.

 

[robing]

Not in a container that can expand flexibly, surely? V can change as the T and P rises, I think.

The inner tube itself can expand, but not the tyre.

 

[slowmotion]

The inner tube itself can expand, but not the tyre.

Hmmmm... Good point.

 

[Mark1978]

I've found that in my car, the heat gets up and the tyre get supple. The tube will then force the tyre off the rim, and with nothing to hold it in place will explode out of the gap created between tyre and rim.

For this reason, i now deflate my tubes if the bike is going to be in the car for long periods in the sun.