Before buying a used truck tire, About.com recommends checking for any damage on the inner liner of the tire to ensure that it has enough tread, has even wear and includes the tire identification number. Shoppers should also examine the tire for any faulty repairs and incomplete beads.
To test the depth of the tread, the buyer can hold a penny upside-down and insert it into a groove. If the top of Lincoln's head disappears into the groove, the tire is not worn too far. Assess the tread surface to ensure that braided steel cords or wires are not visible.
In addition to checking the tire identification number, which usually starts with letters DOT, buyers should check the sidewall and tread areas for any cracks or punctures. If the number is not visible and cracks are present, the tire is not good.