Magnesium is an excellent metal to add to an alloy to make wheels. Because magnesium is 1.5 times less dense than aluminum, while retaining similar specific strength and damping capacities, it is ...

Used almost exclusively on race cars until now, the upcoming CT4-V and CT5-V's "mag wheels" should be significantly lighter than conventional alloy wheels.

Transwheel Corp., which describes itself as the largest alloy repair vendor in the nation, handles more than 150,000 wheel repairs annually, according to company officials.