what is the difference between a mack wheel&a normal wheel?

Answer 1

if you mean mag instead of mack , mag is short for magnesium, the drag racers in the early 60's used them to reduce unsprung weight to give better performance, over time any custom wheel was called a mag , weather made of steel, or aluminium. magnesium is very rare on street wheels because of cost, durability ,they are practically impossible to keep shiny, and magnesium has the interesting ability to burn