P315/35R20 in inches

How tall is a P315 35R20 tire?

When converted to inches, the equivalent of a P315/35R20 tire size is 28.6x12.4R20. It means that:

  • height overall (or diameter) is 28.6 inches
  • tread width is 12.4 inches
  • wheel diameter is 20 inches

Learn more

P315/35R20 tire size in inches
P315/35R20 tire size chart

P315/35R20 tire size in inches

P315/35R20 Height / overall diameter: 28.6 inches
Height / overall diameter
28.6 inches
P315/35R20 Tread width: 12.4 inches
Tread width
12.4 inches
P315/35R20 Sidewall: 4.3 inches
Sidewall
4.3 inches
P315/35R20 Wheel diameter: 20 inches
Wheel diameter
20 inches
P315/35R20 Circumference: 89.8 inches
Circumference
89.8 inches
P315/35R20 Revolutions: 707 per mile
Revolutions
707 per mile

P315/35R20 — what does it mean?

  • P means "passenger car"
  • 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
  • 20 is a wheel diameter (or rim) in inches

P315/35R20 tire code
P315/35R20 tire code

How to convert P315 35R20 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 20″ rim diameter with two of the sidewall heights. It will result in a 28.6″ total tire diameter (or height).

For your convenience, below is a table for P315/35R20 conversion to inches:

Inches Metric
Overall diameter (height) 28.6″ 726 mm
Tread width 12.4″ 315 mm
Wheel diameter 20″ 726 mm
Sidewall height 4.3″ 110 mm
Circumference 89.8″ 2280 mm
Revolutions 707 / ml 439 / km

Alternatives to a P315/35R20 tire

If you're looking to upsize your P315 35R20 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
305/35R20 28.4″ -0.17% 12″ 20″
275/40R20 28.6″ 0% 10.8″ 20″
315/35R20 28.6″ 0% 12.4″ 20″
295/40R20 29.2″ 0.54% 11.6″ 20″
285/40R20 29″ 0.38% 11.2″ 20″
295/35R20 28.2″ -0.35% 11.6″ 20″
285/35R20 27.8″ -0.7% 11.2″ 20″
155/65R20 28″ -0.52% 6.1″ 20″
235/45R20 28.4″ -0.17% 9.3″ 20″
235/50R20 29.2″ 0.54% 9.3″ 20″