145/80R20 In Inches

What size tire is 145/80R20 in Inches?

The 145/80R20 equivalent to 29.1x5.7R20 in inches, as follow:

  • 29.1 inches (740mm) stand for the tire diameter, also referred to as the tire height
  • 5.7 inches (145mm) 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.
Diameter29.1"740 mm
Tread Width5.7"145 mm
Rim Diameter20"508 mm
Sidewall Height4.6"116 mm
Circumference91.4"2322 mm
Revolutions694"431 mm
tire diameter
Tire Side
Tire Circumference
694 Revs/Mile

What is 145/80R20 tire diameter?

The 145/80R20 has an overall diameter of 29.1 inches or 740 mm tall (Measurement of a tire’s outside diameter through its exact center when inflated with no load.)

How wide is a 145/80R20 tire’s width?

The 145/80R20 has a width of 5.7 inches or 145 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 145/80R20 tire sidewall height?

The 145/80R20 has a sidewall height of 4.6 inches or 116 mm tall. It’s measured from the rim to the outer edge of the tire.

What size rim do you need for 145/80R20?

The 145/80R20 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 145/80R20 per mile or kilometer?

The 145/80R20 performs 694 revolutions per mile or 431 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 145/80R20 tire circumference?

The circumference of 145/80R20 is 91.4 inches or 2322 mm.

What’s wider or narrow than 145/80R20 is acceptable?

You can replace the 145/80R20 tires that are within ±3% of the overall tire diameter. In this case, it’s between 28.2 and 30 inches (718mm to 762 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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