2020 Subaru WRX STI Tire Size

There are multiple tire sizes for your 2020 Subaru WRX STI that depend upon the trim level.  Look for your trim level below to get a color-coded explanation of your tire size.  Then pick the best tire size for your 2020 Subaru WRX STI.

245/35R19 89W

Simplified Size:  245-35-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 Subaru WRX STI is 245/35R19 89W.  A color-coded explanation of the 2020 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.

RRadial
BBias Belt
DDiagonal
W

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.

Trim Options:

Series.White

245/35R19/XL (93Y)

Simplified Size:  245-35-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 Subaru WRX STI is 245/35R19/XL 93(Y).  A color-coded explanation of the 2020 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.

XL

The mark of XL means extra load.  A tire with this designation can handle higher inflation pressures than a regular tire, which increases its maximum load.

93

This tire has a load index of 93, which means it's capable of carrying a load of 1430 pounds (650 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.

RRadial
BBias Belt
DDiagonal
Y

This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.