A. Section Width
B. Section height
P 185/ 80 R 13
1. Tire type
P - passenger
T - tire for spare wheel
C - commercial
2. Section width (mm)
185
195
205 etc.
3. Ratio (section height to width)
70
75
80
4. Construction type
R - radial tires
B - diagonally belted
D - with a diagonal cord
5. Disc diameter (inches)
13
14
15