How to Read Tire Size

❶Nominal section width (mm)

This refers to the width of the tire excluding design and lettering on the sidewall, etc. *Does not include rim guard.

❷Aspect ratio (series,%)

This figure indicates the ratio of a tire’s heigh.

Aspect ratio(%)= Tire height÷tire width×100

❸Construction code

“R” stands for radial structure.

❹Nominal rim diameter (inches)

Refers to the diameter of the wheel rim suitable for the tire. The term “tire’s inner diameter” is also used.

❺Load Index (LI)

An index expressing the maximum load permitted for a tire under established conditions.

❻Speed symbol

This indicates the maximum permissible speed in symbols under established conditions.

❼Speed category (ZR: over240km/h)

❽Nominal outside diameter (inches)

❾Nominal section width (inches)

❿Load Index: Single/Dual

⓫C: Commercial vehicle

Complies with ETRTO(European tire regulations).

⓬P: Passenger car tire

Complies with TRA(North American tire regulations).

⓭LT: Light Truck

Complies with JATMA(Japanese tire regulations) or TRA(North American tire regulations).