Nitto NT555RII P315/40R18 Tires

Nitto NT555RII P315/40R18 LL 102W is a track and competition tire priced from $438.00.

Nitto NT555RII P315/40R18 LL 102W Tire Specs

P315/40R18 is a P-Metric tire used as an original equipment on a variety of popular passenger cars. It also comes in a Metric (315/40R18) variant

Let us decode each aspect of the tire size code to have a full understanding what this tire size means.

P indicates that P315/40R18 is a passenger tire.

315 is a section width of the tire from one sidewall to the other. Tire tread width is typically a bit narrower than the section width. Section width of P315/40R18 tire is 315 millimeters.

40 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For P315/40R18 tire, the sidewall height is 40% of its tread width.

R denotes that P315/40R18 tire has radial construction.

18 represents the wheel diameter in inches that the tire is designed to fit. P315/40R18 can be mounted on rims with 18 inches in diameter.

LL denotes the load range of a tire. Tires marked with LL are designed to carry lighter loads compared to standard load (SL) tires. They are typically found on certain passenger vehicles where the load requirements are lower than average. These tires often require less inflation pressure than higher load range tires.

102 indicates the load index. A tire with a load index of 102 can support a maximum load of 1874 pounds or 850 kilograms per tire.

W indicates the speed rating. A tire with a speed rating of W is approved for speeds up to 168 miles per hour or 270 kilometers per hour under optimal conditions.

Maximum inflation for Nitto NT555RII P315/40R18 tire is 44 psi.

Uniform Tire Quality Grading System (UTQG) rating for Nitto NT555RII P315/40R18 tire is 100 A A.

Tire manufacturer part number (MPN) is 108770.