2018 Subaru WRX STI Tire Size
The original tire size for your 2018 Subaru WRX STI is listed below. Tap on the box to view a color-coded explanation of the best Subaru WRX STI tire size.
245/35R19 89
Simplified Size: 245-35-19
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Subaru WRX STI is 245/35R19 89W. A color-coded explanation of the 2018 Subaru WRX STI's tire size is shown below.
245 | This number indicates that your tire has a width of 245 millimeters. | ||||||
19 | The tire size was designed to fit rims or wheels that are 19 inches in diameter. | ||||||
89 | This tire has a load index of 89, which means it's capable of carrying a load of 1276 pounds (580 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
35 | This number means that your tire has an aspect ratio of 35%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% of the width. In this case, the sidewall height works out to be 85 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||
This tire has a speed rating of W, which means 167 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |