There are several differences between aluminum alloy steel ring and iron steel ring: 1, aluminum alloy steel ring has strong heat dissipation, iron steel ring has slow heat dissipation, and the heat transfer coefficient of aluminum alloy is about 3 times larger than that of iron; 2. Aluminum alloy wheels are lighter than iron wheels, easier to control when turning, and more flexible, which reduces fuel consumption for car owners to some extent; Most importantly, many car owners want to change rims, because aluminum rims look better than iron rims, and changing rims is allowed.