315/70R20 In Inches

What size tire is 315/70R20 in Inches?

The 315/70R20 equivalent to 37.4x12.4R20 in inches, as follow:

  • 37.4 inches (949mm) stand for the tire diameter, also referred to as the tire height
  • 12.4 inches (315mm) is the tire width, this may also know as the section width
  • 20 inches (508mm) represent the rim diameter or called the wheel diameter that can be mounted on.
InchesMetric
Tire Diameter37.4"949 mm
Tread Width12.4"315 mm
Rim Diameter20"508 mm
Sidewall Height8.7"221 mm
Circumference117.5"2985 mm
Revolutions539 revs/mile335 revs/km
tire diameter
12.4"
37.4"
Tire Side
Tire Circumference
117.5"
20"
8.7"
539 Revs/Mile

What is a 315/70R20 tire width?

The 315/70R20 has a width of 12.4 inches or 315 mm wide. This is the measurement of the tire at its thickest point, the distance between the inner sidewall’s widest point and the outer sidewall’s widest point. This physical width of the tire can change if the tire is mounted on a wheel slightly wider or narrower than the size indicated by the rim width.

How tall is a 315/70R20 tire’s height?

The 315/70R20 has an overall diameter of 37.4 inches or 950 mm tall (measured from the outside edges of the wheel)

What size rim do I need for 315/70R20?

The size rim of a 315/70R20 tire is 20 inches or 508 mm tall. This number represents the distance between the two bead seat areas where the tire is sealed onto the wheel.

How tall is a 315/70R20 tire sidewall’s height?

The sidewall height of a 315/70R20 is 8.7 inches or 221 mm tall. It’s measured from the rim to the outer edge of the tire.

What about 315/70R20 tire circumference?

315/70R20 tire has a circumference of 117.5 inches or 2985 mm

How many revolutions for 315/70R20 per mile & kilometer?

The 315/70R20 performs 335 revolutions per kilometer or 539 revolutions per mile. Revolutions per mile indicate the number of times a tire revolves while it covers the distance of one mile/kilometer

What’s wider or narrow than 315/70R20 is acceptable?

You can replace the 315/70R20 tires that are within ±3% of the overall tire diameter. In this case, it’s between 36.3 and 38.5 inches (922mm to 979 mm). Check our tire size chart here or the tire size calculator tool here to find your size.


Tire Size Chart for 20" Wheels:

25″ Tire Diameter

26″ Tire Diameter

27″ Tire Diameter


28″ Tire Diameter

29″ Tire Diameter

30″ Tire Diameter


31″ Tire Diameter

32″ Tire Diameter

33″ Tire Diameter


34″ Tire Diameter

35″ Tire Diameter

36″ Tire Diameter

37″ Tire Diameter

39″ Tire Diameter

*Disclaimer: The information provided on the tire size is for general informational purposes only. We recommend that you consult a certified tire specialist or National Highway Traffic Safety Administration (NHTSA) sets specific guidelines for tires used on vehicles.


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Jamie Hicks

Sullivan Kane

Tire Technician at TireSizesCalculator

Sullivan is a Tire Technician specializing in tire repair at TireSizesCalculator. With over 6 years of experience in the industry, Sullivan has become an expert in tire repair, maintenance & installation.


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