How to look at tire specifications, model sizes, parameter explanations, and meanings

Tire size, model size, expressed in millimeters as a percentage of section width and aspect ratio. Add: tire type code, rim diameter (inch), load index (allowable bearing quality code), and allowable speed code.

Assuming the size of the tire is 195/55/R16 85V.

195 - refers to the tire width of 195 mm.

55 - refers to the tire aspect ratio, that is, the section height is 55% of the width.

R - means that the tire is a radial tire (the inner layer of this tire is made of a radial tire)

15 - refers to the rim diameter, which is 15 inches.

85--Load index 85 means the maximum load is 515kg, and the four tires are 515×4=2060kg.

V - refers to a speed class of 240 km/h.

Tire Safety Speed Mark Table [Code - Safety Speed Limit km/h]

【L-120】【M-130】【N-140】【P-150】【Q-160】【R-170】

【S-180】【T-190】【U-200】【H-210】【V-240】【ZR-240】

Tire load index [code - load kg]

【82-475】【83-487】【84-500】【85-515】【86-530】【87-545】

【88-560】【89-580】【90-600】【91-615】【92-630】【93-650】

Refers to the tire section height as a percentage of the maximum width of the section.

Aspect ratio refers to the tire profile height as a percentage of the maximum width of its outer cross-section (crown). Simply put, it is the aspect ratio of the tire.

For example, a tire with a specification of 205/60R15 means that the maximum width of its cross-section is 205 mm, the aspect ratio is 60%, and the inner diameter is 15 inches.

The aspect ratio is 60%, that is, the height of the tire longitudinal section is 205*60%=123 mm.