LT325/75R20 in inches

How tall is a LT325 75R20 tire?

When converted to inches, the equivalent of a LT325/75R20 tire size is 39.2x12.8R20. It means that:

  • height overall (or diameter) is 39.2 inches
  • tread width is 12.8 inches
  • wheel diameter is 20 inches

Learn more

LT325/75R20 tire size in inches
LT325/75R20 tire size chart

LT325/75R20 tire size in inches

LT325/75R20 Height / overall diameter: 39.2 inches
Height / overall diameter
39.2 inches
LT325/75R20 Tread width: 12.8 inches
Tread width
12.8 inches
LT325/75R20 Sidewall: 9.6 inches
9.6 inches
LT325/75R20 Wheel diameter: 20 inches
Wheel diameter
20 inches
LT325/75R20 Circumference: 123.1 inches
123.1 inches
LT325/75R20 Revolutions: 515 per mile
515 per mile

LT325/75R20 — what does it mean?

  • LT means "light truck"
  • 325 stands for tread width in millimeters
  • 75 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

LT325/75R20 tire code
LT325/75R20 tire code

How to convert LT325 75R20 to inches?

First of all, we need to divide 325 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 12.8″. Then, 75% of the 12.8″ will result in 9.6″ 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 39.2″ total tire diameter (or height).

For your convenience, below is a table for LT325/75R20 conversion to inches:

Inches Metric
Overall diameter (height) 39.2″ 996 mm
Tread width 12.8″ 325 mm
Wheel diameter 20″ 996 mm
Sidewall height 9.6″ 244 mm
Circumference 123.1″ 3127 mm
Revolutions 515 / ml 320 / km

Alternatives to a LT325/75R20 tire

If you're looking to upsize your LT325 75R20 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
325/75R20 39.2″ 0% 12.8″ 20″