Continental ContiSportContact 3 SSR P275/40R18 Tires
Continental ContiSportContact 3 SSR P275/40R18 SL 99Y is an ultra high performance summer tire with run-flat capability priced from $582.99.
Continental ContiSportContact 3 SSR P275/40R18 SL 99Y Tire Specs
P275/40R18 is a P-Metric tire. It also comes in a Metric (275/40R18) variant
Let us decode each aspect of the tire size code to have a full understanding what this tire size means.
P indicates that P275/40R18 is a passenger tire.
275 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 P275/40R18 tire is 275 millimeters.
40 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For P275/40R18 tire, the sidewall height is 40% of its tread width.
R denotes that P275/40R18 tire has radial construction.
18 represents the wheel diameter in inches that the tire is designed to fit. P275/40R18 can be mounted on rims with 18 inches in diameter.
SL denotes the load range of a tire. Standard Load or SL tires are typically found on passenger cars, smaller SUVs, and light trucks. These tires are designed to operate at standard inflation pressures and are not meant for carrying heavy loads.
99 indicates the load index. A tire with a load index of 99 can support a maximum load of 1709 pounds or 775 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.
Continental ContiSportContact 3 SSR P275/40R18 is a run-flat tire designed to resist the effects of deflation when punctured, and to enable the vehicle to continue to be driven at a reduced speed for a limited distance.
Maximum inflation for Continental ContiSportContact 3 SSR P275/40R18 tire is 51 psi.
Uniform Tire Quality Grading System (UTQG) rating for Continental ContiSportContact 3 SSR P275/40R18 tire is 280 AA A.
Tire manufacturer part number (MPN) is 03502840000.

P275/40R18 Dimensions Chart
Continental ContiSportContact 3 SSR P275/40R18 tire has a diameter of 26.7", a width of 10.8", mounts on a 18" rim, and makes 756 revolutions per mile.
Metric | Inches | |
---|---|---|
Tire Width | 275 mm | 10.8" |
Aspect Ratio | 40% | |
Rim Diameter | 457 mm | 18" |
Tire Diameter | 677 mm | 26.7" |
Sidewall Height | 110 mm | 4.3" |
Circumference | 2126 mm | 83.8" |
Revolutions | 470 per km | 756 per mile |
More P275/40R18 Tires
Here are the lowest priced tires availabe in P275/40R18 tire size.

Nitto NT555RII P275/40R18
from $289.00
Goodyear Eagle F1 GS EMT P275/40R18
from $540.60Shop more P275/40R18 tires with tire finder.
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