Cooper Discoverer S/T Maxx LT285/55R20 Tires

Cooper Discoverer S/T Maxx LT285/55R20 E 122/119Q is an all-terrain tire.

Cooper Discoverer S/T Maxx LT285/55R20 E 122/119Q Tire Specs

LT285/55R20 is a LT-Metric tire. It also comes in a Metric (285/55R20) and a P-Metric (P285/55R20) variant

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

LT indicates that LT285/55R20 is a light truck tire.

285 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 LT285/55R20 tire is 285 millimeters.

55 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For LT285/55R20 tire, the sidewall height is 55% of its tread width.

R denotes that LT285/55R20 tire has radial construction.

20 represents the wheel diameter in inches that the tire is designed to fit. LT285/55R20 can be mounted on rims with 20 inches in diameter.

E denotes the load range of a tire. Load Range E is equivalent to a 10-ply rating, but this doesn't mean the tire actually has 10 physical plies. These tires are generally rated for a maximum inflation pressure of 80 psi, and are commonly used on vehicles that carry heavy cargo or tow trailers, such as full-size vans, pickup trucks, and larger SUVs. They are also found on commercial trucks and RVs.

122/119 indicates a dual load index, meaning a tire can be used in a single or a dual application. For a single application, load index of 122 can support a maximum load of 3307 pounds or 1500 kilograms per tire. For a dual application, load index of 119 can support a maximum load of 2998 pounds or 1360 kilograms per tire.

Q indicates the speed rating. A tire with a speed rating of Q is approved for speeds up to 99 miles per hour or 159 kilometers per hour under optimal conditions.

Maximum inflation for Cooper Discoverer S/T Maxx LT285/55R20 tire is 80 psi.

Tire manufacturer part number (MPN) is 170092004.