Width of the tread in millimeters.
The numbers on a tire represents different meanings for example: P215/65R15 the no.215 stands for the width of the tire in millimeters, the no.65 represents the height or aspect ratio of the tire, and the no.15 stands for the tires rim and wheel diameter
On a metric sized tire it is the tread width. Example, p225/75r15. The tread is 225 mm wide.
Answer The numbers on the side of tires mean the sizes and heights of the tire in question. If the numbers weren't there no one would know the tire size. More exactly... Taking 195/75R14 as an example...The first number is the measurment in milimeters of the widest part of the tread- The second number is the height of the sidewall in relation to the first number expressed as a percentage (the height of the tire is 75% of the first number) and the last number behind the R is the rim size in inches.
the size of the tire, the model, when it was made
Department of transportation.
Tire Pressure Monitor
I was told today, at Discount Tire, that FRD indicated "a Ford exclusive tire". I am still researching to confirm that.
265 70 16 tire size will fit on 16 inch rims. The first numbers of the range indicate the tire face. The second set of numbers is the tire height. The last set of numbers indicates the rim size.
Tire Pressure Monitor
There are a series of numbers printed on the sidewall of the tire, just above the bead area. They will not be as uniformed or professional looking as the tire size number or printed brand of the tire. One side of the tire will have these additional numbers and the other side won't. The side with the most numbers", will tell you the manufacture date. The last 4 numbers are the date recorded as week and year. For instance if it lists 1608, then the tire was made the 16th week of 2008.
That is Pounds per square inch. The amount of compressed air to inflate the tire