- Lightweight, sporty wheels made of magnesium. The term mag is often applied to aluminum and aluminum and steel combination wheels. Also see alloy wheels.
- A motor-vehicle wheel made from lightweight magnesium steel, typically having a pattern of holes or spokes around the hub
- Alloy wheels (incorrectly known as rims) are automobile (car, motorcycle and truck) wheels which are made from an alloy of aluminium or magnesium (or sometimes a mixture of both). They are typically lighter for the same strength and provide better heat conduction and improved cosmetic appearance.
- (Mag Wheels) Some high-performance automobiles have wheels made of cast magnesium, commonly known as "mag wheels" for short.