Today, I changed to summer tires on my Toyota RAV4 hybrid. Usually I check the air pressure after changing the tires (well, wheels, actually) with the tires on the car.
However, today I instead decided to check the air pressure of all tires before I installed them on the car.
I observed that all tires had just 2.2 bar, and I pumped them up to 2.4 bar to allow for some amount of air loss during the season (the recommended pressure is 2.3 bar, it's specified for cold tires). However, I after doing that, I became slightly concerned that having the car's weight on the tires could increase the air pressure, and thereby the air pressure could perhaps be too high.
Is my concern valid? Does tire pressure increase when the tires are installed to a car and the car's weight is on the tires therefore?
I at least know that temperature has a measurable effect on air pressure. But does weight load on the tires do the same?