2013 Scion tC Tire Size

The original tire size for your 2013 Scion tC is listed below. Tap on the box to view a color-coded explanation of the best Scion tC tire size.

P225/45R18 91W

Simplified Size:  225-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 Scion tC is P225/45R18 91W.  A color-coded explanation of the 2013 Scion tC's tire size is shown below.

P

This letter denotes the intended use of the tire.

PPassenger Vehicle
LTLight Truck
CCommercial Vehicle
225

This number indicates that your tire has a width of 225 millimeters.

45

This number means that your tire has an aspect ratio of 45%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width.  In this case, the sidewall height works out to be 101 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
18

The tire size was designed to fit rims or wheels that are 18 inches in diameter.

91

This tire has a load index of 91, which means it's capable of carrying a load of 1353 pounds (615 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.