2009 Ford F-150 Platinum Tire Size
The original tire size for your 2009 Ford F-150 Platinum is listed below. Tap on the box to view a color-coded explanation of the best Ford F-150 tire size.
The original tire size for your 2009 Ford F-150 Platinum is P275/55R20 111S. A color-coded explanation of the 2009 Ford F-150 Platinum's tire size is shown below.
This letter denotes the intended use of the tire.
This number indicates that your tire has a width of 275 millimeters.
This number means that your tire has an aspect ratio of 55%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width. In this case, the sidewall height works out to be 151 millimeters.
This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
The tire size was designed to fit rims or wheels that are 20 inches in diameter.
This tire has a load index of 111, which means it's capable of carrying a load of 2398 pounds (1090 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite.
This tire has a speed rating of S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous.