alloywheel

An alloy wheel is a wheel made predominantly from an aluminum or magnesium alloy rather than steel. Alloy wheels are standard on many modern passenger cars and performance vehicles due to lighter weight, greater design freedom, and improved heat dissipation. They are typically lighter than steel wheels of the same size, which can improve acceleration, braking, and handling while allowing more varied aesthetics.

Manufacturing methods for alloy wheels include casting (gravity or low-pressure casting), forging, and flow-forming. Cast wheels are common and relatively inexpensive; forged wheels are stronger and lighter but usually cost more. Flow-formed or semi-forged wheels start as a cast blank and are mechanically worked at the rim area to increase strength and reduce weight. Each method yields different strength, durability, and price characteristics.

Advantages of alloy wheels include reduced unsprung weight, better brake cooling, and broader styling options. Disadvantages can include higher cost, potential vulnerability to cosmetic damage such as curb rash, and varying corrosion resistance depending on alloy composition and finishes. Alloys can be more susceptible to cracking from severe impacts and may require specialized repair or replacement if damaged.

Fitment considerations for alloy wheels include wheel diameter and width, bolt pattern, center bore, and offset to suit the vehicle and tire size. They must meet the vehicle’s load ratings and handle appropriate tire profiles to maintain safety and handling characteristics. Alloy wheels are typically recyclable and can be repaired in some cases, though severely damaged wheels often require replacement.