Bridgestone Potenza S001 RFT 225/40R18 Tires
Bridgestone Potenza S001 RFT 225/40R18 SL 88Y is an ultra high performance summer tire with run-flat capability priced from $208.72.
Bridgestone Potenza S001 RFT 225/40R18 SL 88Y Tire Specs
225/40R18 is a Metric tire used as an original equipment on a variety of popular passenger cars. It also comes in a P-Metric (P225/40R18) variant
Let us decode each aspect of the tire size code to have a full understanding what this tire size means.
225 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 225/40R18 tire is 225 millimeters.
40 represents the aspect ratio of a tire, which is a ratio of the tire's sidewall height to its width. For 225/40R18 tire, the sidewall height is 40% of its tread width.
R denotes that 225/40R18 tire has radial construction.
18 represents the wheel diameter in inches that the tire is designed to fit. 225/40R18 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.
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.
Bridgestone Potenza S001 RFT 225/40R18 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 Bridgestone Potenza S001 RFT 225/40R18 tire is 51 psi.
Uniform Tire Quality Grading System (UTQG) rating for Bridgestone Potenza S001 RFT 225/40R18 tire is 280 A A.
Tire manufacturer part number (MPN) is 023869.

225/40R18 Dimensions Chart
Bridgestone Potenza S001 RFT 225/40R18 tire has a diameter of 25.1", a width of 8.9", mounts on a 18" rim, and makes 804 revolutions per mile.
Metric | Inches | |
---|---|---|
Tire Width | 225 mm | 8.9" |
Aspect Ratio | 40% | |
Rim Diameter | 457 mm | 18" |
Tire Diameter | 637 mm | 25.1" |
Sidewall Height | 90 mm | 3.5" |
Circumference | 2000 mm | 78.8" |
Revolutions | 500 per km | 804 per mile |
More 225/40R18 Tires
Here are the lowest priced tires availabe in 225/40R18 tire size.

GT Radial Champiro UHP A/S 225/40R18
from $77.94
Accelera Phi 225/40R18
from $78.97
Westlake SA-07 225/40R18
from $80.97
Achilles Street Hawk Sport 225/40R18
from $85.99
Milestar Weatherguard AS710 Sport 225/40R18
from $92.79
Milestar MS932 Sport 225/40R18
from $95.95
Riken Raptor ZR A/S 225/40R18
from $97.77
Milestar Interceptor A/S 810 225/40R18
from $99.95Shop more 225/40R18 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.