WHEELS
Wheels are made of either stamped or pressed steel discs
riveted or welded together.they are also available in the
form of aluminum or magnesium that are die-cast
or forged (Figure 42-l). Magnesium wheels are commonly
referred to as mag wheels, although they are usually
made of an aluminum alloy. Aluminum wheels are
lighter in weight when compared with the stamped steel
type. This weight savings is important because the
wheels and tires on a vehicle are unsprung weight. This
means the weight is not supported by the vehicle's
springs.