285/55R20 In Inches

What size tire is 285/55R20 in Inches?

The 285/55R20 equivalent to 32.4x11.2R20 in inches, as follow:

  • 32.4 inches (822mm) stand for the tire diameter, also referred to as the tire height
  • 11.2 inches (285mm) 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
Diameter32.4"822 mm
Tread Width11.2"285 mm
Rim Diameter20"508 mm
Sidewall Height6.2"157 mm
Circumference101.8"2586 mm
Revolutions623"387 mm
tire diameter
11.2"
32.4"
Tire Side
Tire Circumference
101.8"
20"
6.2"
623 Revs/Mile

What is 285/55R20 tire diameter?

The 285/55R20 has an overall diameter of 32.4 inches or 822 mm tall (Measurement of a tire’s outside diameter through its exact center when inflated with no load.)

How wide is a 285/55R20 tire’s width?

The 285/55R20 has a width of 11.2 inches or 285 mm wide. This is the measurement of the tire at its thickest point, the distance between the outer sidewall’s widest point and the inner 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.

What is a 285/55R20 tire sidewall height?

The 285/55R20 has a sidewall height of 6.2 inches or 157 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.

What size rim do you need for 285/55R20?

The 285/55R20 tire has a size rim of 20 inches or 508 mm. This number represents the distance between the two bead seat areas where the tire is sealed onto the wheel.

How many revolutions for 285/55R20 per mile or kilometer?

The 285/55R20 performs 623 revolutions per mile or 387 revolutions per kilometer. Revolutions per mile indicate the number of times a tire revolves while it covers the distance of one mile/kilometer

How about 285/55R20 tire circumference?

The circumference of 285/55R20 is 101.8 inches or 2586 mm.

What’s wider or narrow than 285/55R20 is acceptable?

You can replace the 285/55R20 tires that are within ±3% of the overall tire diameter. In this case, it’s between 31.4 and 33.4 inches (797mm to 847 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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