P225/45R13 in inches

How tall is a P225 45R13 tire?

When converted to inches, the equivalent of a P225/45R13 tire size is 21x8.9R13. It means that:

  • height overall (or diameter) is 21 inches
  • tread width is 8.9 inches
  • wheel diameter is 13 inches

Learn more

P225/45R13 tire size in inches
P225/45R13 tire size chart

P225/45R13 tire size in inches

P225/45R13 Height / overall diameter: 21 inches
Height / overall diameter
21 inches
P225/45R13 Tread width: 8.9 inches
Tread width
8.9 inches
P225/45R13 Sidewall: 4 inches
Sidewall
4 inches
P225/45R13 Wheel diameter: 13 inches
Wheel diameter
13 inches
P225/45R13 Circumference: 65.9 inches
Circumference
65.9 inches
P225/45R13 Revolutions: 961 per mile
Revolutions
961 per mile

P225/45R13 — what does it mean?

  • P means "passenger car"
  • 225 stands for tread width in millimeters
  • 45 is an aspect ration between the tread width and the sidewall in percents
  • R means that the tire has a radial construction
  • 13 is a wheel diameter (or rim) in inches

P225/45R13 tire code
P225/45R13 tire code

How to convert P225 45R13 to inches?

First of all, we need to divide 225 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 8.9″. Then, 45% of the 8.9″ will result in 4″ sidewall.

To get the total height or tire diameter, we need to sum the 13″ rim diameter with two of the sidewall heights. It will result in a 21″ total tire diameter (or height).

For your convenience, below is a table for P225/45R13 conversion to inches:

Inches Metric
Overall diameter (height) 21″ 533 mm
Tread width 8.9″ 225 mm
Wheel diameter 13″ 533 mm
Sidewall height 4″ 101 mm
Circumference 65.9″ 1674 mm
Revolutions 961 / ml 597 / km

Alternatives to a P225/45R13 tire

If you're looking to upsize your P225 45R13 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
125/80R13 20.8″ -0.24% 4.9″ 13″
135/70R13 20.4″ -0.71% 5.3″ 13″
135/80R13 21.6″ 0.74% 5.3″ 13″
145/65R13 20.4″ -0.71% 5.7″ 13″
145/70R13 21″ 0% 5.7″ 13″
155/65R13 21″ 0% 6.1″ 13″
155/70R13 21.6″ 0.74% 6.1″ 13″
165/60R13 20.8″ -0.24% 6.5″ 13″
165/65R13 21.4″ 0.51% 6.5″ 13″
175/55R13 20.6″ -0.47% 6.9″ 13″