BMW R1200RT/R1250RT Forum

I was inspecting my tires today (Michelin Road 6). For the first time ever, I noticed the maximum tire pressure is 42 psi. BMW's recommended cold rear tire pressure for my bike is 42 psi. That is not a problem when my tires are cold. On some of those hot Texas days, on my TPM, I have seen the that pressure rise to over 46 psi. Is this something I should be concerned about? I would prefer not to be stopping every hour to adjust tire pressure. 8^( I am hoping that that maximum is calibrated to reflect Boyle's law. Does anybody have any educated thoughts on this?

The maximum load – here it’s 365kg – is the most the tyre can support at a standardised pressure – in this case 42psi.

as above

Its cold tyre pressure

The 42psi is not a maximum pressure, it's the load which is a maximum at that standard cold pressure.

Here's another example, different type of tyre and max. load but the same standard 42psi.

Thanks guys. I presumed as much, but just thought I would ask.