What are the effects of different tire sizes on a car?

[VanJeffrey]

Car tire size has a significant impact on vehicle performance, primarily affecting fuel consumption, acceleration capability, and rotational inertia. Below are the detailed explanations: Fuel consumption: The influence of tires on fuel consumption is mainly reflected in wheel diameter, wheel weight, and aspect ratio. Larger vehicle rims require greater rotational inertia, which consumes more power and consequently increases fuel consumption. Acceleration capability: If the engine outputs the same amount of energy acting on the wheel torque, a smaller lever arm results in greater force. If the tire radius increases, the car's lever arm increases while the force decreases, reducing the vehicle's driving capability and thus lowering its acceleration performance. Rotational inertia: Whether the car is accelerating or decelerating, the engine's output power must overcome the wheel's inertia to directly change the vehicle's rotational speed. The larger the wheel diameter, the greater the rotational inertia that needs to be overcome.