The simple answer is friction. Spinning tires are coming into contact with the road. The road's surface is not perfectly smooth -- it has a certain amount of roughness so the tires can grip and propel the car forward.
Any time you have friction between two surfaces, and one of those surfaces moves to overcome that friction, a certain amount of energy from the process is lost as heat.
the friction between the tire & the surface your driving on causes heat and which heats the tire + the air...
When a car is driven, the air inside the tires heats up due to friction with the road and the movement of the tire. This increase in temperature causes the air molecules to move faster and spread out, leading to an increase in air pressure inside the tires.
Friction
ONLY the front tires can spend on a non-all wheel front end driven car.
Because heat is created and it changes the air pressure
The tire will go flat.
Because it experiences large anounts of friction every time the car is driven
Tires of car get hot at driving time because the wheels are flex repeatedly as the rotate. The tire deforms at the road surface and compresses and the other reason of hot is the lack of air pressure causes greater deflection, and more movement in the rubber
Cold is what the pressure listed is for. This is usually hard when having driven the car that day so when they are hot just subtract 3-5 psi. Being + or - 3 or 4 psi will have negligible "real world" effect.
Tires create friction, which in turn creates heat. Heated objects expand.
Heat is built up while driving and that will increase pressure in the tires.
Everything expands when it gets hot, contracts when cold including air molecules...tires expand just from the heat of driving down the road as well