For 1990-2009 cars

The tyre sidewall has a coded marking system, which provides information about the tyre.

Tyre Marking Example:
P 245 50 R 16 95 S
P | Passenger Vehicle Designation
245 | Section Width in mm (245 mm)
50 | Aspect Ratio % (Section Height to Section Width) (50 = 50%)
R | Tyre Construction (R = Radial)
16 | Rim Diameter in inches (16 = 16")
C | Service Application Code (C or LT = Light Truck or Multi-purpose Passenger Vehicle) NOTE: Some European and Japanese light truck tyres use C instead of LT for the same purpose.
95 | Max Load Index | 91 = 615 kg
92 = 630 kg
93 = 650 kg
94 = 670 kg
95 = 690 kg
96 = 710 kg
97 = 730 kg
99 = 775 kg
104 = 900 kg
106 = 950 kg
S | Speed Rating | R = 170 km/h
S = 180 km/h
H = 210 km/h
V = 240 km/h
W = 270 km/h