Wheel and Tire Designations

GENERAL INFORMATION

Tire sidewall markings 1 – maximum load.

2 – maximum inflation pressure.

3 – belt characteristics.

4 – ply characteristics.

5 – ply material and number of plies.

6 – DOT compliance mark.

7 – manufacturer code.

8 – size code.

9 – tire type.

10 – manufacturing date.

11 – year of manufacture.

12 – radial tire.

13 – tubeless tire.

14 – nominal width.

15 – aspect ratio.

16 – radial tire.

17 – rim diameter.

18 – load index.

19 – speed symbol.

20 – ECE test mark.

21 – ECE approval number

Wheel Designations

Designation: 6J x 14 H2 ET 38 is interpreted as follows.

6J Rim width in inches.

J Rim flange height.

x Drop center rim.

14 Rim diameter in inches.

H2 Rim with two humps for tubeless tire mounting.

ET 38 Offset: distance from the wheel mounting surface to the wheel centerline.

Tire Designations

Designation: 195/70 HR 14 89 H is interpreted as follows.

195 Tire width in mm.

/70 Aspect ratio, height to width of the profile in % (standard aspect ratio is 82%).

H Speed rating symbol, maximum permissible speed.

Q 160 km/h.

S 180 km/h.

T 190 km/h.

H 210 km/h.

V 240 km/h.

ZR over 240 km/h.

R Radial tires.

14 Rim diameter in inches.

89 Load index.

Warning.

If the designation M+S appears between 14 and 89, it refers to tires with a winter

tread pattern.

Tire Manufacturing Date

Designation: DOT CUL UM8-421 TUBELESS is interpreted as follows.

DOT DOT compliance mark.

CU Manufacturer code.

L2 Tire size.

UM8 Tire type.

421 Manufacturing date (42nd week of 1991).

TUBELESS Tubeless tire (TUBETYPE – tire with tube)