mikewsmith – Member
from my vague recollection of thermodynamics and some google (including back to here to estimate the volume of a 2.3″ tyre on a 26″ wheel is about 5.8l. Not really going from 35 to 55 (unless I have ballsed up badly) wont do that much.
(P1*V1)/T1 = (P2*V2)/T2
Just need to remember the units to use…
Back of the envelope calculation suggests that the pressure in a tyre at 30 psi would only increase by approximately 2psi for a 20C rise in temperature so not likely to be due to the heat expanding the air.
Note I assumed that the tyre would stay at a constant volume – as it would probably stretch thne teh pressure rise would be less