Pirelli P Zero (PZ4) 285/40R20 Tires
Pirelli P Zero (PZ4) 285/40R20 XL 108Y is an ultra high performance summer tire priced from $430.99.
Pirelli P Zero (PZ4) 285/40R20 XL 108Y Tire Specs
285/40R20 is a Metric tire used as an original equipment on a variety of popular sport utility vehicles. It also comes in a High-Load (HL285/40R20) variant
Let us decode each aspect of the tire size code to have a full understanding what this tire size means.
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 285/40R20 tire is 285 millimeters.
40 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For 285/40R20 tire, the sidewall height is 40% of its tread width.
R denotes that 285/40R20 tire has radial construction.
20 represents the wheel diameter in inches that the tire is designed to fit. 285/40R20 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.
108 indicates the load index. A tire with a load index of 108 can support a maximum load of 2205 pounds or 1000 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) 285/40R20 tire is 50 psi.
Uniform Tire Quality Grading System (UTQG) rating for Pirelli P Zero (PZ4) 285/40R20 tire is 280 AA A.
Tire manufacturer part number (MPN) is 3939000.

285/40R20 Dimensions Chart
Pirelli P Zero (PZ4) 285/40R20 tire has a diameter of 29", a width of 11.2", mounts on a 20" rim, and makes 695 revolutions per mile.
Metric | Inches | |
---|---|---|
Tire Width | 285 mm | 11.2" |
Aspect Ratio | 40% | |
Rim Diameter | 508 mm | 20" |
Tire Diameter | 736 mm | 29" |
Sidewall Height | 114 mm | 4.5" |
Circumference | 2311 mm | 91.1" |
Revolutions | 433 per km | 695 per mile |
More 285/40R20 Tires
Here are the lowest priced tires availabe in 285/40R20 tire size.

Atturo AZ850 285/40R20
from $142.99
Laufenn S Fit AS 285/40R20
from $191.99
Nitto NT420V 285/40R20
from $278.00
Falken Azenis FK460 A/S 285/40R20
from $290.00
Continental ProContact RX 285/40R20
from $303.99
Bridgestone Blizzak LM005 285/40R20
from $322.48
Dunlop Sport Maxx RT2 285/40R20
from $345.99
Continental EcoContact 6Q 285/40R20
from $358.56Shop more 285/40R20 tires with tire finder.
All listed guides, data and/or calculations are for informational purposes only. TireSizes.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information.