255/30R30 in inches

How tall is a 255 30R30 tire?

When converted to inches, the equivalent of a 255/30R30 tire size is 36x10R30. It means that:

  • height overall (or diameter) is 36 inches
  • tread width is 10 inches
  • wheel diameter is 30 inches

Learn more

255/30R30 tire size in inches
255/30R30 tire size chart

255/30R30 tire size in inches

255/30R30 Height / overall diameter: 36 inches
Height / overall diameter
36 inches
255/30R30 Tread width: 10 inches
Tread width
10 inches
255/30R30 Sidewall: 3 inches
3 inches
255/30R30 Wheel diameter: 30 inches
Wheel diameter
30 inches
255/30R30 Circumference: 113 inches
113 inches
255/30R30 Revolutions: 560 per mile
560 per mile

255/30R30 — what does it mean?

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

255/30R30 tire code
255/30R30 tire code

How to convert 255 30R30 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, 30% of the 10″ will result in 3″ sidewall.

To get the total height or tire diameter, we need to sum the 30″ rim diameter with two of the sidewall heights. It will result in a 36″ total tire diameter (or height).

For your convenience, below is a table for 255/30R30 conversion to inches:

Inches Metric
Overall diameter (height) 36″ 914 mm
Tread width 10″ 255 mm
Wheel diameter 30″ 914 mm
Sidewall height 3″ 77 mm
Circumference 113″ 2870 mm
Revolutions 560 / ml 348 / km

Alternatives to a 255/30R30 tire

If you're looking to upsize your 255 30R30 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
275/25R30 35.4″ -0.41% 10.8″ 30″
315/20R30 35″ -0.69% 12.4″ 30″