Steel wheels: steel wheels are used as standard on many low cost vehicles. Made from iron and carbon its a hard metal to give strength but also are heavier compared to aluminium. Hub caps are often used to improve the aesthetics of the steel wheel.
Alloys: Alloy wheels are lighter than the steel wheel, they used to be reserved for more premium vehicles but they are now used on most hatchbacks. Alloys use unsprung mass to help with handling by allowing the suspension to interact with the road surface.
Multi Piece Wheels: Wheels can be constructed by sealing two or three components together made up of the wheel face and the rim. Screwing and sealing these parts together can make them heavier and slightly weaker.
Forged Wheels: Forged wheels are typically very strong, they are made by subjecting aluminium to a high heat and crushing it into shape. This makes the wheels light and strong.
Bargain Wheels: There are many bargains on the internet replicating and reproducing wheels. Be careful when thinking of buying imitation wheels as they are often made cheap and could lack important strength.