What Are the Spikes on Big Truck Tires Used For?

Driving down the interstate or on the streets of Jackson, you may see semi-trucks with shiny metal spikes sticking out of the center of their wheels. It draws your attention and makes you wonder why the truck driver put them there.
Tire spikes, also called wheel covers or lug nut covers, are not uncommon on big trucks, and you may have seen them on passenger vehicles as well. But what are the spikes on big truck tires used for?
















