305/30R22 in inches

How tall is a 305 30R22 tire?

When converted to inches, the equivalent of a 305/30R22 tire size is 29.2x12R22. It means that:

  • height overall (or diameter) is 29.2 inches
  • tread width is 12 inches
  • wheel diameter is 22 inches

Learn more

305/30R22 tire size in inches
305/30R22 tire size chart

305/30R22 tire size in inches

305/30R22 Height / overall diameter: 29.2 inches
Height / overall diameter
29.2 inches
305/30R22 Tread width: 12 inches
Tread width
12 inches
305/30R22 Sidewall: 3.6 inches
Sidewall
3.6 inches
305/30R22 Wheel diameter: 22 inches
Wheel diameter
22 inches
305/30R22 Circumference: 91.7 inches
Circumference
91.7 inches
305/30R22 Revolutions: 690 per mile
Revolutions
690 per mile

305/30R22 — what does it mean?

  • 305 stands for tread width in millimeters
  • 30 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

305/30R22 tire code
305/30R22 tire code

How to convert 305 30R22 to inches?

First of all, we need to divide 305 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 12″. Then, 30% of the 12″ will result in 3.6″ 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 29.2″ total tire diameter (or height).

For your convenience, below is a table for 305/30R22 conversion to inches:

Inches Metric
Overall diameter (height) 29.2″ 742 mm
Tread width 12″ 305 mm
Wheel diameter 22″ 742 mm
Sidewall height 3.6″ 92 mm
Circumference 91.7″ 2330 mm
Revolutions 690 / ml 429 / km

Alternatives to a 305/30R22 tire

If you're looking to upsize your 305 30R22 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
265/35R22 29.4″ 0.17% 10.4″ 22″
335/25R22 28.6″ -0.54% 13.2″ 22″
285/35R22 29.8″ 0.5% 11.2″ 22″
295/30R22 29″ -0.17% 11.6″ 22″
245/35R22 28.8″ -0.34% 9.6″ 22″
255/35R22 29″ -0.17% 10″ 22″
255/40R22 30″ 0.66% 10″ 22″
275/30R22 28.6″ -0.54% 10.8″ 22″
275/35R22 29.6″ 0.33% 10.8″ 22″
285/30R22 28.8″ -0.34% 11.2″ 22″