255/40R22 in inches

How tall is a 255 40R22 tire?

When converted to inches, the equivalent of a 255/40R22 tire size is 30x10R22. It means that:

  • height overall (or diameter) is 30 inches
  • tread width is 10 inches
  • wheel diameter is 22 inches

Learn more

255/40R22 tire size in inches
255/40R22 tire size chart

255/40R22 tire size in inches

255/40R22 Height / overall diameter: 30 inches
Height / overall diameter
30 inches
255/40R22 Tread width: 10 inches
Tread width
10 inches
255/40R22 Sidewall: 4 inches
Sidewall
4 inches
255/40R22 Wheel diameter: 22 inches
Wheel diameter
22 inches
255/40R22 Circumference: 94.2 inches
Circumference
94.2 inches
255/40R22 Revolutions: 673 per mile
Revolutions
673 per mile

255/40R22 — what does it mean?

  • 255 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
  • 22 is a wheel diameter (or rim) in inches

255/40R22 tire code
255/40R22 tire code

How to convert 255 40R22 to inches?

First of all, we need to divide 255 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 10″. Then, 40% of the 10″ will result in 4″ sidewall.

To get the total height or tire diameter, we need to sum the 22″ rim diameter with two of the sidewall heights. It will result in a 30″ total tire diameter (or height).

For your convenience, below is a table for 255/40R22 conversion to inches:

Inches Metric
Overall diameter (height) 30″ 762 mm
Tread width 10″ 255 mm
Wheel diameter 22″ 762 mm
Sidewall height 4″ 102 mm
Circumference 94.2″ 2393 mm
Revolutions 673 / ml 418 / km

Alternatives to a 255/40R22 tire

If you're looking to upsize your 255 40R22 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
265/35R22 29.4″ -0.5% 10.4″ 22″
305/35R22 30.4″ 0.33% 12″ 22″
285/35R22 29.8″ -0.16% 11.2″ 22″
265/40R22 30.4″ 0.33% 10.4″ 22″
275/40R22 30.6″ 0.49% 10.8″ 22″
275/35R22 29.6″ -0.33% 10.8″ 22″
295/35R22 30.2″ 0.16% 11.6″ 22″
305/30R22 29.2″ -0.66% 12″ 22″
315/30R22 29.4″ -0.5% 12.4″ 22″
315/35R22 30.6″ 0.49% 12.4″ 22″