315/35R30 in inches

How tall is a 315 35R30 tire?

When converted to inches, the equivalent of a 315/35R30 tire size is 38.6x12.4R30. It means that:

  • height overall (or diameter) is 38.6 inches
  • tread width is 12.4 inches
  • wheel diameter is 30 inches

Learn more

315/35R30 tire size in inches
315/35R30 tire size chart

315/35R30 tire size in inches

315/35R30 Height / overall diameter: 38.6 inches
Height / overall diameter
38.6 inches
315/35R30 Tread width: 12.4 inches
Tread width
12.4 inches
315/35R30 Sidewall: 4.3 inches
4.3 inches
315/35R30 Wheel diameter: 30 inches
Wheel diameter
30 inches
315/35R30 Circumference: 121.2 inches
121.2 inches
315/35R30 Revolutions: 523 per mile
523 per mile

315/35R30 — what does it mean?

  • 315 stands for tread width in millimeters
  • 35 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

315/35R30 tire code
315/35R30 tire code

How to convert 315 35R30 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, 35% of the 12.4″ will result in 4.3″ 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 38.6″ total tire diameter (or height).

For your convenience, below is a table for 315/35R30 conversion to inches:

Inches Metric
Overall diameter (height) 38.6″ 980 mm
Tread width 12.4″ 315 mm
Wheel diameter 30″ 980 mm
Sidewall height 4.3″ 110 mm
Circumference 121.2″ 3077 mm
Revolutions 523 / ml 325 / km

Alternatives to a 315/35R30 tire

If you're looking to upsize your 315 35R30 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size