Amy measured the tire pressure of her truck that was parked outside after a cold night. the daytime temperature reached a nice 65 °f. assume amy's tires do not have any leaks. explain the change in tire pressure. 6 a. m. - 30 psi 9 a. m. - 32 psi 1 p. m. - 35 psi a) the air molecules heated inside the tire causing them to move faster exerting more pressure on the inside walls of the tires. b) the air molecules heated inside the tire causing them to move faster exerting less pressure on the inside walls of the tires. c) the air molecules heated inside the tire causing them to move slower exerting more pressure on the inside walls of the tires. d) the air molecules heated inside the tire causing them to move slower exerting less pressure on the inside walls of the tires.