As a race car races around the track, friction between the tire and the road heats the air in the tires and the pressure inside the tires increases. What is the best explanation for this?

Particles in the air hit the inside of the tire walls less frequently.
Air particles speed up and collide with the tire walls more often.
Air particles get larger and make the gas take up more space.
The heat causes the rubber in the tires to create new air particles.