* Reversing: When the car is going in reverse, the wheels rotate backwards relative to the car's direction of travel.
* Engine braking/downshifting: In some situations, especially with manual transmissions, the engine can act as a brake, causing the wheels to rotate slower than they would otherwise, or even briefly in the opposite direction (depending on the gear and speed).
* Wheel slippage: If a wheel loses traction (e.g., on ice), it might momentarily rotate backwards relative to the car's intended movement.
But under normal forward driving conditions, the wheels rotate forwards.