205/45R15 in inches

How tall is a 205 45R15 tire?

When converted to inches, the equivalent of a 205/45R15 tire size is 22.2x8.1R15. It means that:

  • height overall (or diameter) is 22.2 inches
  • tread width is 8.1 inches
  • wheel diameter is 15 inches

Learn more

205/45R15 tire size in inches
205/45R15 tire size chart

205/45R15 tire size in inches

205/45R15 Height / overall diameter: 22.2 inches
Height / overall diameter
22.2 inches
205/45R15 Tread width: 8.1 inches
Tread width
8.1 inches
205/45R15 Sidewall: 3.6 inches
Sidewall
3.6 inches
205/45R15 Wheel diameter: 15 inches
Wheel diameter
15 inches
205/45R15 Circumference: 69.7 inches
Circumference
69.7 inches
205/45R15 Revolutions: 909 per mile
Revolutions
909 per mile

205/45R15 — what does it mean?

  • 205 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
  • 15 is a wheel diameter (or rim) in inches

205/45R15 tire code
205/45R15 tire code

How to convert 205 45R15 to inches?

First of all, we need to divide 205 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 8.1″. Then, 45% of the 8.1″ will result in 3.6″ sidewall.

To get the total height or tire diameter, we need to sum the 15″ rim diameter with two of the sidewall heights. It will result in a 22.2″ total tire diameter (or height).

For your convenience, below is a table for 205/45R15 conversion to inches:

Inches Metric
Overall diameter (height) 22.2″ 564 mm
Tread width 8.1″ 205 mm
Wheel diameter 15″ 564 mm
Sidewall height 3.6″ 92 mm
Circumference 69.7″ 1771 mm
Revolutions 909 / ml 565 / km

Alternatives to a 205/45R15 tire

If you're looking to upsize your 205 45R15 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
125/70R15 22″ -0.22% 4.9″ 15″
135/70R15 22.4″ 0.22% 5.3″ 15″
145/65R15 22.4″ 0.22% 5.7″ 15″
155/60R15 22.4″ 0.22% 6.1″ 15″
165/55R15 22.2″ 0% 6.5″ 15″
165/60R15 22.8″ 0.66% 6.5″ 15″
175/50R15 22″ -0.22% 6.9″ 15″
175/55R15 22.6″ 0.44% 6.9″ 15″
185/45R15 21.6″ -0.67% 7.3″ 15″
185/50R15 22.4″ 0.22% 7.3″ 15″