Short answer: A magnet is the quickest test, because steel wheels attract it strongly while alloy wheels, which are mostly aluminium, do not, and alloy wheels are also noticeably lighter, usually have a more decorative spoke design and are often marked with a manufacturer name or alloy code on the back, so a magnet and a quick look at the weight and finish normally settle it.
Wheels ready? Compare offers from verified buyers.
List Free →The magnet test
Steel and iron attract a magnet while aluminium does not, so a magnet on the rim face tells you straight away which type you have, although a thick coating or plating can weaken the pull.
Weight and design
Alloy wheels are lighter than steel wheels of the same size and tend to have open spokes, whereas steel wheels are usually plain pressed discs, often with a hubcap.
Markings
Casting marks, size codes and manufacturer names on the back of the wheel confirm what you have and help a buyer decide whether it is worth more than scrap.
How ScrapTrade Fits In
ScrapTrade buyers can identify your wheels from photos, so you can list them without worrying about the exact type.
Knowing what your wheels are is half the sale. ScrapTrade connects you with verified buyers, transparent weighing and escrow-protected payments.
List or Find Scrap on ScrapTrade →