Tread depth is a vertical measurement between the top of the tread rubber to the bottom of the tire's deepest grooves. Tread depth is measured in 32nds of an inch.
Tread depth is best measured with a tire tread depth gauge. Some use a penny to accomplish measurement. If Lincoln's entire head is visible, the tire is worn to approximately 2/32" and is considered legally worn out .
Typically new tires start with 10/32" to 11/32" of original tread depth. Seasonal or specialty tires are deeper (for light truck tires, how much deeper depends on the tire's tread type. Highway Rib, Highway All Season, Off Road All Terrain or Off Road Maximum Traction).
In most places, tires are legally "worn out" reach 2/32" of remaining tread depth or when Lincoln's head is visible.
Useable tread depth is calculated by subtracting 2/32" from the tires new tread depth.
If you are unsure of the amount of tread left on your tires, stop by the Ralph Sellers Service Department today!
8/32 or more - Tires are good
7/32 - 4/32 - Caution
3/32 - Worn
