Accelera Phi-R 255/25R21 Tires
Accelera Phi-R 255/25R21 XL 88Y is an ultra high performance all-season tire priced from $160.99.
Accelera Phi-R 255/25R21 XL 88Y Tire Specs
255/25R21 is a Metric tire.
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 255/25R21 tire is 255 millimeters.
25 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For 255/25R21 tire, the sidewall height is 25% of its tread width.
R denotes that 255/25R21 tire has radial construction.
21 represents the wheel diameter in inches that the tire is designed to fit. 255/25R21 can be mounted on rims with 21 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.
88 indicates the load index. A tire with a load index of 88 can support a maximum load of 1235 pounds or 560 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 Accelera Phi-R 255/25R21 tire is 44 psi.
Uniform Tire Quality Grading System (UTQG) rating for Accelera Phi-R 255/25R21 tire is 400 A A.
Tire manufacturer part number (MPN) is 1200049242.

255/25R21 Dimensions Chart
Accelera Phi-R 255/25R21 tire has a diameter of 26", a width of 10", mounts on a 21" rim, and makes 776 revolutions per mile.
Metric | Inches | |
---|---|---|
Tire Width | 255 mm | 10" |
Aspect Ratio | 25% | |
Rim Diameter | 533 mm | 21" |
Tire Diameter | 661 mm | 26" |
Sidewall Height | 64 mm | 2.5" |
Circumference | 2076 mm | 81.6" |
Revolutions | 482 per km | 776 per mile |
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