LT305/60R20 in inches

How tall is a LT305 60R20 tire?

When converted to inches, the equivalent of a LT305/60R20 tire size is 34.4x12R20. It means that:

  • height overall (or diameter) is 34.4 inches
  • tread width is 12 inches
  • wheel diameter is 20 inches

Learn more

LT305/60R20 tire size in inches
LT305/60R20 tire size chart

LT305/60R20 tire size in inches

LT305/60R20 Height / overall diameter: 34.4 inches
Height / overall diameter
34.4 inches
LT305/60R20 Tread width: 12 inches
Tread width
12 inches
LT305/60R20 Sidewall: 7.2 inches
Sidewall
7.2 inches
LT305/60R20 Wheel diameter: 20 inches
Wheel diameter
20 inches
LT305/60R20 Circumference: 108 inches
Circumference
108 inches
LT305/60R20 Revolutions: 586 per mile
Revolutions
586 per mile

LT305/60R20 — what does it mean?

  • LT means "light truck"
  • 305 stands for tread width in millimeters
  • 60 is an aspect ration between the tread width and the sidewall in percents
  • R means that the tire has a radial construction
  • 20 is a wheel diameter (or rim) in inches

LT305/60R20 tire code
LT305/60R20 tire code

How to convert LT305 60R20 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, 60% of the 12″ will result in 7.2″ sidewall.

To get the total height or tire diameter, we need to sum the 20″ rim diameter with two of the sidewall heights. It will result in a 34.4″ total tire diameter (or height).

For your convenience, below is a table for LT305/60R20 conversion to inches:

Inches Metric
Overall diameter (height) 34.4″ 874 mm
Tread width 12″ 305 mm
Wheel diameter 20″ 874 mm
Sidewall height 7.2″ 183 mm
Circumference 108″ 2744 mm
Revolutions 586 / ml 364 / km

Alternatives to a LT305/60R20 tire

If you're looking to upsize your LT305 60R20 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
275/65R20 34″ -0.29% 10.8″ 20″
LT275/65R20 34″ -0.29% 10.8″ 20″
285/65R20 34.6″ 0.14% 11.2″ 20″
325/60R20 35.4″ 0.71% 12.8″ 20″
285/60R20 33.4″ -0.75% 11.2″ 20″
295/60R20 34″ -0.29% 11.6″ 20″
LT285/60R20 33.4″ -0.75% 11.2″ 20″
295/65R20 35.2″ 0.57% 11.6″ 20″
315/60R20 34.8″ 0.28% 12.4″ 20″
305/60R20 34.4″ 0% 12″ 20″