265/30R21 in inches

How tall is a 265 30R21 tire?

When converted to inches, the equivalent of a 265/30R21 tire size is 27.2x10.4R21. It means that:

  • height overall (or diameter) is 27.2 inches
  • tread width is 10.4 inches
  • wheel diameter is 21 inches

Learn more

265/30R21 tire size in inches
265/30R21 tire size chart

265/30R21 tire size in inches

265/30R21 Height / overall diameter: 27.2 inches
Height / overall diameter
27.2 inches
265/30R21 Tread width: 10.4 inches
Tread width
10.4 inches
265/30R21 Sidewall: 3.1 inches
Sidewall
3.1 inches
265/30R21 Wheel diameter: 21 inches
Wheel diameter
21 inches
265/30R21 Circumference: 85.4 inches
Circumference
85.4 inches
265/30R21 Revolutions: 742 per mile
Revolutions
742 per mile

265/30R21 — what does it mean?

  • 265 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
  • 21 is a wheel diameter (or rim) in inches

265/30R21 tire code
265/30R21 tire code

How to convert 265 30R21 to inches?

First of all, we need to divide 265 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 10.4″. Then, 30% of the 10.4″ will result in 3.1″ sidewall.

To get the total height or tire diameter, we need to sum the 21″ rim diameter with two of the sidewall heights. It will result in a 27.2″ total tire diameter (or height).

For your convenience, below is a table for 265/30R21 conversion to inches:

Inches Metric
Overall diameter (height) 27.2″ 691 mm
Tread width 10.4″ 265 mm
Wheel diameter 21″ 691 mm
Sidewall height 3.1″ 80 mm
Circumference 85.4″ 2170 mm
Revolutions 742 / ml 461 / km

Alternatives to a 265/30R21 tire

If you're looking to upsize your 265 30R21 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
235/30R21 26.6″ -0.55% 9.3″ 21″
235/35R21 27.4″ 0.18% 9.3″ 21″
245/30R21 26.8″ -0.36% 9.6″ 21″
245/35R21 27.8″ 0.54% 9.6″ 21″
255/30R21 27″ -0.18% 10″ 21″
275/25R21 26.4″ -0.73% 10.8″ 21″
275/30R21 27.6″ 0.36% 10.8″ 21″
285/30R21 27.8″ 0.54% 11.2″ 21″
295/25R21 26.8″ -0.36% 11.6″ 21″
295/30R21 28″ 0.71% 11.6″ 21″