125/80R12 in inches

How tall is a 125 80R12 tire?

When converted to inches, the equivalent of a 125/80R12 tire size is 19.8x4.9R12. It means that:

  • height overall (or diameter) is 19.8 inches
  • tread width is 4.9 inches
  • wheel diameter is 12 inches

Learn more

125/80R12 tire size in inches
125/80R12 tire size chart

125/80R12 tire size in inches

125/80R12 Height / overall diameter: 19.8 inches
Height / overall diameter
19.8 inches
125/80R12 Tread width: 4.9 inches
Tread width
4.9 inches
125/80R12 Sidewall: 3.9 inches
3.9 inches
125/80R12 Wheel diameter: 12 inches
Wheel diameter
12 inches
125/80R12 Circumference: 62.2 inches
62.2 inches
125/80R12 Revolutions: 1019 per mile
1019 per mile

125/80R12 — what does it mean?

  • 125 stands for tread width in millimeters
  • 80 is an aspect ration between the tread width and the sidewall in percents
  • R means that the tire has a radial construction
  • 12 is a wheel diameter (or rim) in inches

125/80R12 tire code
125/80R12 tire code

How to convert 125 80R12 to inches?

First of all, we need to divide 125 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 4.9″. Then, 80% of the 4.9″ will result in 3.9″ sidewall.

To get the total height or tire diameter, we need to sum the 12″ rim diameter with two of the sidewall heights. It will result in a 19.8″ total tire diameter (or height).

For your convenience, below is a table for 125/80R12 conversion to inches:

Inches Metric
Overall diameter (height) 19.8″ 503 mm
Tread width 4.9″ 125 mm
Wheel diameter 12″ 503 mm
Sidewall height 3.9″ 100 mm
Circumference 62.2″ 1579 mm
Revolutions 1019 / ml 633 / km

Alternatives to a 125/80R12 tire

If you're looking to upsize your 125 80R12 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
145/70R12 20″ 0.25% 5.7″ 12″
165/60R12 19.8″ 0% 6.5″ 12″