Pirelli P Zero (PZ4) 255/40R20 Tires
Pirelli P Zero (PZ4) 255/40R20 XL 101Y is an ultra high performance summer tire priced from $344.99.
Pirelli P Zero (PZ4) 255/40R20 XL 101Y Tire Specs
255/40R20 is a Metric tire used as an original equipment on a variety of popular passenger cars and sport utility vehicles. It also comes in a P-Metric (P255/40R20) 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 255/40R20 tire is 255 millimeters.
40 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For 255/40R20 tire, the sidewall height is 40% of its tread width.
R denotes that 255/40R20 tire has radial construction.
20 represents the wheel diameter in inches that the tire is designed to fit. 255/40R20 can be mounted on rims with 20 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.
101 indicates the load index. A tire with a load index of 101 can support a maximum load of 1819 pounds or 825 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 Pirelli P Zero (PZ4) 255/40R20 tire is 51 psi.
Uniform Tire Quality Grading System (UTQG) rating for Pirelli P Zero (PZ4) 255/40R20 tire is 280 AA A.
Tire manufacturer part number (MPN) is 3942600.

255/40R20 Dimensions Chart
Pirelli P Zero (PZ4) 255/40R20 tire has a diameter of 28", a width of 10", mounts on a 20" rim, and makes 721 revolutions per mile.
Metric | Inches | |
---|---|---|
Tire Width | 255 mm | 10" |
Aspect Ratio | 40% | |
Rim Diameter | 508 mm | 20" |
Tire Diameter | 712 mm | 28" |
Sidewall Height | 102 mm | 4" |
Circumference | 2236 mm | 87.9" |
Revolutions | 447 per km | 721 per mile |
More 255/40R20 Tires
Here are the lowest priced tires availabe in 255/40R20 tire size.

Accelera Phi 255/40R20
from $108.99
Kumho Ecsta PS91 255/40R20
from $186.97
Laufenn X Fit HP 255/40R20
from $191.99
Falken Winterpeak F-Ice 1 255/40R20
from $204.00
Falken Azenis FK460 A/S 255/40R20
from $215.00
Yokohama Parada Spec-X 255/40R20
from $226.97
Nitto Nomad Grappler 255/40R20
from $231.00
Toyo Proxes Sport 255/40R20
from $258.87Shop more 255/40R20 tires with tire finder.
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