Nokian zLine A/S 255/45R18 Tires

Nokian zLine A/S 255/45R18 XL 103Y is an ultra high performance all-season tire.

Nokian zLine A/S 255/45R18 XL 103Y Tire Specs

255/45R18 is a Metric tire used as an original equipment on a variety of popular passenger cars. It also comes in a P-Metric (P255/45R18) variant

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

255 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 255/45R18 tire is 255 millimeters.

45 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For 255/45R18 tire, the sidewall height is 45% of its tread width.

R denotes that 255/45R18 tire has radial construction.

18 represents the wheel diameter in inches that the tire is designed to fit. 255/45R18 can be mounted on rims with 18 inches in diameter.

XL denotes the load range of a tire. XL stands for Extra Load. Tires with this designation are constructed to carry more weight than standard load tires of the same size. This is achieved by reinforcing the tire's construction, often through additional or stronger layers known as plies.

103 indicates the load index. A tire with a load index of 103 can support a maximum load of 1929 pounds or 875 kilograms per tire.

Y indicates the speed rating. A tire with a speed rating of Y is approved for speeds up to 186 miles per hour or 299 kilometers per hour under optimal conditions.

Maximum inflation for Nokian zLine A/S 255/45R18 tire is 51 psi.

Uniform Tire Quality Grading System (UTQG) rating for Nokian zLine A/S 255/45R18 tire is 500 A A.

Tire manufacturer part number (MPN) is T431026.