225/55R16 in inches

How tall is a 225 55R16 tire?

When converted to inches, the equivalent of a 225/55R16 tire size is 25.8x8.9R16. It means that:

  • height overall (or diameter) is 25.8 inches
  • tread width is 8.9 inches
  • wheel diameter is 16 inches

Learn more

225/55R16 tire size in inches
225/55R16 tire size chart

225/55R16 tire size in inches

225/55R16 Height / overall diameter: 25.8 inches
Height / overall diameter
25.8 inches
225/55R16 Tread width: 8.9 inches
Tread width
8.9 inches
225/55R16 Sidewall: 4.9 inches
Sidewall
4.9 inches
225/55R16 Wheel diameter: 16 inches
Wheel diameter
16 inches
225/55R16 Circumference: 81 inches
Circumference
81 inches
225/55R16 Revolutions: 782 per mile
Revolutions
782 per mile

225/55R16 — what does it mean?

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

225/55R16 tire code
225/55R16 tire code

How to convert 225 55R16 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, 55% of the 8.9″ will result in 4.9″ sidewall.

To get the total height or tire diameter, we need to sum the 16″ rim diameter with two of the sidewall heights. It will result in a 25.8″ total tire diameter (or height).

For your convenience, below is a table for 225/55R16 conversion to inches:

Inches Metric
Overall diameter (height) 25.8″ 655 mm
Tread width 8.9″ 225 mm
Wheel diameter 16″ 655 mm
Sidewall height 4.9″ 124 mm
Circumference 81″ 2057 mm
Revolutions 782 / ml 486 / km

Alternatives to a 225/55R16 tire

If you're looking to upsize your 225 55R16 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
135/90R16 25.6″ -0.19% 5.3″ 16″
145/80R16 25.2″ -0.58% 5.7″ 16″
145/90R16 26.4″ 0.6% 5.7″ 16″
155/80R16 25.8″ 0% 6.1″ 16″
165/80R16 26.4″ 0.6% 6.5″ 16″
175/75R16 26.4″ 0.6% 6.9″ 16″
185/65R16 25.4″ -0.38% 7.3″ 16″
195/60R16 25.2″ -0.58% 7.7″ 16″
195/65R16 26″ 0.19% 7.7″ 16″
205/60R16 25.6″ -0.19% 8.1″ 16″