180
Section width 		55
Aspect ratio 		R
Construction 		18
Rim diameter 		74
Load index 		V
Speed Rating 		TL
TL/TT
Specs Code/Value Description
Section width Section width
 180 (mm) 		The distance between the outside of a tire sidewalls, not including any lettering or designs.
Aspect ratio Aspect ratio
 55 (%) 		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
 18 (") 		Diameter of rim seat supporting the tire bead.
Load index Load index
 74 (375kg/825lbs) 		Maximum load each tire is designed to carry when inflated to the recommended pressure.
Speed Rating Speed Rating
 V (240km/h/149mph) 		Maximum speed at which a tire can roll with the load indicated in its load index.
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
 4953913,90000001214 		Alpha-numeric designation assigned by a manufacturer to uniquely identify a tire product.