165/40R16 in inches

How tall is a 165 40R16 tire?

When converted to inches, the equivalent of a 165/40R16 tire size is 21.2x6.5R16. It means that:

  • height overall (or diameter) is 21.2 inches
  • tread width is 6.5 inches
  • wheel diameter is 16 inches

Learn more

165/40R16 tire size in inches
165/40R16 tire size chart

165/40R16 tire size in inches

165/40R16 Height / overall diameter: 21.2 inches
Height / overall diameter
21.2 inches
165/40R16 Tread width: 6.5 inches
Tread width
6.5 inches
165/40R16 Sidewall: 2.6 inches
2.6 inches
165/40R16 Wheel diameter: 16 inches
Wheel diameter
16 inches
165/40R16 Circumference: 66.6 inches
66.6 inches
165/40R16 Revolutions: 953 per mile
953 per mile

165/40R16 — what does it mean?

  • 165 stands for tread width in millimeters
  • 40 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

165/40R16 tire code
165/40R16 tire code

How to convert 165 40R16 to inches?

First of all, we need to divide 165 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 6.5″. Then, 40% of the 6.5″ will result in 2.6″ 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 21.2″ total tire diameter (or height).

For your convenience, below is a table for 165/40R16 conversion to inches:

Inches Metric
Overall diameter (height) 21.2″ 538 mm
Tread width 6.5″ 165 mm
Wheel diameter 16″ 538 mm
Sidewall height 2.6″ 66 mm
Circumference 66.6″ 1689 mm
Revolutions 953 / ml 592 / km

Alternatives to a 165/40R16 tire

If you're looking to upsize your 165 40R16 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size