285/40R20 In Inches

What size tire is 285/40R20 in Inches?

The 285/40R20 equivalent to 29x11.2R20 in inches, as follow:

  • 29 inches (736mm) 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.
Diameter29"736 mm
Tread Width11.2"285 mm
Rim Diameter20"508 mm
Sidewall Height4.5"114 mm
Circumference91.1"2314 mm
Revolutions695"432 mm
tire diameter
Tire Side
Tire Circumference
695 Revs/Mile

What is a 285/40R20 tire width?

The 285/40R20 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 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.

What is 285/40R20 tire diameter?

The 285/40R20 has an overall diameter of 29 inches or 736 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 285/40R20?

The size rim of a 285/40R20 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 285/40R20 tire sidewall’s height?

The sidewall height of a 285/40R20 is 4.5 inches or 114 mm tall. It’s measured from the rim to the outer edge of the tire.

What about 285/40R20 tire circumference?

285/40R20 tire has a circumference of 91.1 inches or 2314 mm

How many revolutions for 285/40R20 per mile & kilometer?

The 285/40R20 performs 432 revolutions per kilometer or 695 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 285/40R20 is acceptable?

You can replace the 285/40R20 tires that are within ±3% of the overall tire diameter. In this case, it’s between 28.1 and 29.9 inches (714mm to 758 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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