GM Service Manual Online
For 1990-2009 cars only

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


Object Number: 70078  Size: MH

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