315/25R20 in inches

How tall is a 315 25R20 tire?

When converted to inches, the equivalent of a 315/25R20 tire size is 26.2x12.4R20. It means that:

  • height overall (or diameter) is 26.2 inches
  • tread width is 12.4 inches
  • wheel diameter is 20 inches

Learn more

315/25R20 tire size in inches
315/25R20 tire size chart

315/25R20 tire size in inches

315/25R20 Height / overall diameter: 26.2 inches
Height / overall diameter
26.2 inches
315/25R20 Tread width: 12.4 inches
Tread width
12.4 inches
315/25R20 Sidewall: 3.1 inches
Sidewall
3.1 inches
315/25R20 Wheel diameter: 20 inches
Wheel diameter
20 inches
315/25R20 Circumference: 82.3 inches
Circumference
82.3 inches
315/25R20 Revolutions: 771 per mile
Revolutions
771 per mile

315/25R20 — what does it mean?

  • 315 stands for tread width in millimeters
  • 25 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

315/25R20 tire code
315/25R20 tire code

How to convert 315 25R20 to inches?

First of all, we need to divide 315 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 12.4″. Then, 25% of the 12.4″ will result in 3.1″ 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 26.2″ total tire diameter (or height).

For your convenience, below is a table for 315/25R20 conversion to inches:

Inches Metric
Overall diameter (height) 26.2″ 665 mm
Tread width 12.4″ 315 mm
Wheel diameter 20″ 665 mm
Sidewall height 3.1″ 79 mm
Circumference 82.3″ 2088 mm
Revolutions 771 / ml 479 / km

Alternatives to a 315/25R20 tire

If you're looking to upsize your 315 25R20 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
245/35R20 26.8″ 0.59% 9.6″ 20″
145/60R20 26.8″ 0.59% 5.7″ 20″
225/35R20 26.2″ 0% 8.9″ 20″
235/30R20 25.6″ -0.57% 9.3″ 20″
235/35R20 26.4″ 0.22% 9.3″ 20″
245/30R20 25.8″ -0.38% 9.6″ 20″
255/30R20 26″ -0.19% 10″ 20″
265/30R20 26.2″ 0% 10.4″ 20″
275/30R20 26.6″ 0.41% 10.8″ 20″
285/25R20 25.6″ -0.57% 11.2″ 20″