Roadwheel

Roadwheel is a term used to describe the wheel assembly employed on road vehicles, including cars, trucks, and bicycles. In its broad sense, a roadwheel comprises the wheel rim and hub, typically with an attached tire, and it serves as the component that bears load, transfers drivetrain torque, and rolls along the road surface. The wheel is mounted on an axle or hub and interacts with the vehicle’s suspension and braking systems.

Materials and construction vary by application. Steel wheels are common for value-oriented or older designs, while cast or forged aluminum alloy wheels offer greater strength and lighter weight. More specialized applications may use carbon fiber. The tire mounted to the wheel provides traction and cushioning; most modern road wheels use tubeless tires, though tube-type tires persist in some markets.

Design parameters include wheel diameter and width, offset, and bolt pattern, which affect fitment with tires, brakes, and suspension components. Wheel types range from steel and alloy wheels for everyday use to high-performance racing wheels, as well as bicycle road wheels, which are typically lighter and may be wire-spoked or alloy.

Maintenance involves maintaining proper tire pressure, regular balancing, and inspection for cracks, corrosion, or damage. Proper mounting and alignment are essential to prevent handling issues or brake interference. Manufacturing methods include casting and forging for rims, with finishes such as paint, electroplating, or clear coats to resist corrosion.

Historically, wheels evolved from wooden or iron components to steel, then to alloy rims, accompanied by the adoption of tubeless tires and refined manufacturing processes. The term roadwheel is often used interchangeably with wheel in automotive contexts.