315
Section width 		80
Aspect ratio 		R
Construction 		22.5
Rim diameter 		156
Load index 		154
Load index dual 		L
Speed Rating 		J
Load range 		TL
TL/TT
Specs Code/Value Description
Section width Section width
 315 (mm) 		The distance between the outside of a tire sidewalls, not including any lettering or designs.
Aspect ratio Aspect ratio
 80 (%) 		The aspect ratio determines the height of the sidewall and is a percentage of the section width.
Construction Construction
 R (Radial) 		Radial construction tire.
Rim diameter Rim diameter
 22.5 (") 		Diameter of rim seat supporting the tire bead.
Load index Load index
 156 (4000kg/8820lbs) 		Maximum load each tire is designed to carry when inflated to the recommended pressure.
Load index dual Load index dual
 154 (3750kg/8270lbs) 		Maximum load each tire is designed to carry when inflated to the recommended pressure in dual operation.
Speed Rating Speed Rating
 L (120km/h/75mph) 		Maximum speed at which a tire can roll with the load indicated in its load index.
Load range Load range
 J (18 ply) 		Maximum load capacity the tire is engineered to handle at certain inflation pressures. It also define the tire toughness and the strength of the sidewall.
TL/TT TL/TT
 TL (Tubeless) 		Tire specifically designed for fitting to appropriate wheel rims without an inner tube.
Manufacturer part number Manufacturer part number
 123451 		Alpha-numeric designation assigned by a manufacturer to uniquely identify a tire product.