rearwheel

The rear wheel is the wheel located at the back of a vehicle or bicycle. In motor vehicles, it forms part of the wheelset that supports the vehicle’s weight and provides traction with the ground. The rear wheel is also central to propulsion in many configurations, transmitting power from the engine or motor to the road and contributing to steering balance depending on the layout.

In cars and light trucks, rear wheels may be driven, non-driven, or part of all-wheel drive systems. In rear-wheel-drive vehicles, a driveshaft delivers power from the transmission to a differential at the rear axle, which distributes torque to the rear wheels. Some cars use independent rear suspension, while others use a live axle. Braking is usually via drums or discs on the rear wheels; suspension geometry and tire choice affect handling and ride.

On bicycles, the rear wheel is typically driven by a chain to a sprocket on the rear hub, enabling propulsion as torque rotates the wheel. Rear wheels can be fitted with derailleur or hub gears and may use disc or rim brakes. On motorcycles, the rear wheel is often driven by a chain or shaft drive and uses a brake system compatible with that configuration; the wheel also carries the drive sprocket and brake rotor or drum.

Maintenance considerations include proper tire inflation, alignment, and bearing condition, as well as inspecting brakes and the drivetrain for wear. The rear wheel’s performance is influenced by tire type, wheel alignment, suspension, and drivetrain configuration, all of which affect traction, stability, and safety.