Ever wanted to know what all those
letters and numbers were on you tires?
Here are the basics!
The character(s) before the size on the tire designate the tire's class as well as the ply. On the tire below, "P" means that this tire is a passenger car tire and is 4 ply. An "LT" before the tire size would mean it is a light truck tire and is constructed with more than 4 ply. It could be 6 ply, 8,10, 12 etc.
The load rating on a tire which is typically shown as a letter, will tell you the ply: C = 6 ply D= 8 ply E = 10 ply.
Notice how the number of the letter in the alphabet "C" is the 3rd letter multiplied times 2 = 6.
Section Width - "215"