The code on the side of automobile tire provides a information about the tire and its construction.
Examble: P145/65R15 95H
P indicates P-metric for the United States; LT for light truck; no letter indicates Euro metric; ST for special trailer; T for temporary spare tire
3 digit number before /
tire width in mm
2 digit number after /
aspect ratio (ratio of height to width in mm) as percent
carcass construction (R radial; B bias belt; D diagonal; none indicates cross-ply tire)
1 or 2 digit number
rim diameter in inches
2 or 3 digit number
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