305/50R20 In Inches

What size tire is 305/50R20 in Inches?

The 305/50R20 equivalent to 32x12R20 in inches, as follow:

  • 32 inches (813mm) stand for the tire diameter, also referred to as the tire height
  • 12 inches (305mm) 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
Diameter32"813 mm
Tread Width12"305 mm
Rim Diameter20"508 mm
Sidewall Height6"153 mm
Circumference100.5"2553 mm
Revolutions631"392 mm
tire diameter
12"
32"
Tire Side
Tire Circumference
100.5"
20"
6"
631 Revs/Mile

What is a 305/50R20 tire width?

The 305/50R20 has a width of 12 inches or 305 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 big is a 305/50R20 tire’s height?

The overall diameter of a 305/50R20 is 32 inches or 814 mm tall (measurement of a tire’s outside diameter through its exact center when inflated with no load.

What size rim do I need for 305/50R20?

The size rim of a 305/50R20 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 305/50R20 tire sidewall’s height?

The sidewall height of a 305/50R20 is 6 inches or 153 mm tall. It’s measured from the rim to the outer edge of the tire.

What about 305/50R20 tire circumference?

305/50R20 tire has a circumference of 100.5 inches or 2553 mm

How many revolutions for 305/50R20 per mile & kilometer?

The 305/50R20 performs 392 revolutions per kilometer or 631 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 305/50R20 is acceptable?

You can replace the 305/50R20 tires that are within ±3% of the overall tire diameter. In this case, it’s between 31 and 33 inches (790mm to 838 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


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