Tires come in all sorts of sizes. There are numbers and letters on the side of the tire, somewhere between the rim and the tread, that distinguish the particular extent and type.
First Letter(s): Vehicle Rating
Most cars and light truck tires create with the mail "P." That indicates the tire is for "passenger" vehicles. Some might hold "LT" for luminous Motor lorry or "T" for interim tires designed for short distances.
First Set of Numbers: Tire Width
Other letters are "B" for belted biassed and "D" for diagonal biassed.
Last Set of Numbers: Diameter
It is the calibre of your tire measured in inches, the duplicate as the rim dimensions.For a P21565, the wideness is Two hundred fifteen mm and measurement from the inner contour to the top of the tread is Sixty five percent of that, or 139.75 mm.
Next Letter: The Construction Type
Most are "R" for radial tires.This locate of numbers is the wideness of the tire in millimetres. It is measured from sidewall to sidewall not tread wideness.
