Buying safe used tires requires a lot of observation, checking both the tread of the tires, and the side wall for damages and information on when it was created. Dry rot and cracking can ruin a tire, causing it to lose pressure frequently, making use unsafe.
Dry rot occurs as the oils and chemicals in the tire’s compounds start to break down, and a tire with cracking or flaky dry walls has a greater possibility of a blow out. Tread depth is also important when buying a used tire, to make sure the tire can produce the proper amount of traction. An easy method for checking the tread is taking a penny and sliding it along the grooves. If Lincoln’s head on the penny is covered up by the tread, the tire has adequate tread. Checking tread requires examining the entire circumference of the wheel, in case the tire has been overloaded or over-inflated. Tires have dates of manufacture printed on them, four digits that represent the week manufactured, then the year. The suggested life span of a tire is between six and 10 years of age; buying a tire that is six years old or older increases the risk of tire failure. Knowing the condition of the car that used tires come from can help assuage some of the risk of buying used; a vehicle that is well-kept is more likely to have used tires that have been properly maintained.