P185/55R16 in inches

How tall is a P185 55R16 tire?

When converted to inches, the equivalent of a P185/55R16 tire size is 24x7.3R16. It means that:

  • height overall (or diameter) is 24 inches
  • tread width is 7.3 inches
  • wheel diameter is 16 inches

Learn more

P185/55R16 tire size in inches
P185/55R16 tire size chart

P185/55R16 tire size in inches

P185/55R16 Height / overall diameter: 24 inches
Height / overall diameter
24 inches
P185/55R16 Tread width: 7.3 inches
Tread width
7.3 inches
P185/55R16 Sidewall: 4 inches
Sidewall
4 inches
P185/55R16 Wheel diameter: 16 inches
Wheel diameter
16 inches
P185/55R16 Circumference: 75.4 inches
Circumference
75.4 inches
P185/55R16 Revolutions: 840 per mile
Revolutions
840 per mile

P185/55R16 — what does it mean?

  • P means "passenger car"
  • 185 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

P185/55R16 tire code
P185/55R16 tire code

How to convert P185 55R16 to inches?

First of all, we need to divide 185 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 7.3″. Then, 55% of the 7.3″ will result in 4″ 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 24″ total tire diameter (or height).

For your convenience, below is a table for P185/55R16 conversion to inches:

Inches Metric
Overall diameter (height) 24″ 610 mm
Tread width 7.3″ 185 mm
Wheel diameter 16″ 610 mm
Sidewall height 4″ 102 mm
Circumference 75.4″ 1915 mm
Revolutions 840 / ml 522 / km

Alternatives to a P185/55R16 tire

If you're looking to upsize your P185 55R16 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
125/80R16 23.8″ -0.21% 4.9″ 16″
125/85R16 24.4″ 0.41% 4.9″ 16″
135/70R16 23.4″ -0.66% 5.3″ 16″
135/80R16 24.6″ 0.61% 5.3″ 16″
175/55R16 23.6″ -0.45% 6.9″ 16″
175/60R16 24.2″ 0.2% 6.9″ 16″
185/50R16 23.4″ -0.66% 7.3″ 16″
185/55R16 24″ 0% 7.3″ 16″
195/50R16 23.8″ -0.21% 7.7″ 16″
195/55R16 24.4″ 0.41% 7.7″ 16″