for my PP2 i always pump 32~34 PSI lo... depends...
but recommended pressure is around 31~32 PSI... so i put a bit more...
recommended by Michelin that if you drive your car more than 2km already you have to put 2~4 PSI higher...
Car Recommended air pressure are for the standard tyres. Once tyres are changed can follow your own settings, depending on the tyres.
Rule of thumb is between 28psi to 36psi. Below 28psi can something lead to under inflation and over 36psi becomes over inflation and will be very bumpy.
I am surprise you use up to 34psi for PP2 as their sidewall are quite firm, but you know better as that is your preferred setting.
General info:-
Tyres when heated up will increase by 2 to 4psi (depending on the heat and distance traveled)
For Outstation and highway travel, 2psi increase in air pressure is recommended to reduce tyre flex.
rdgs,