275/65R18 In Inches

What size tire is 275/65R18 in Inches?

The 275/65R18 equivalent to 32.1x10.8R18 in inches, as follow:

  • 32.1 inches (815mm) stand for the tire diameter, also referred to as the tire height
  • 10.8 inches (275mm) is the tire width, this may also know as the section width
  • 18 inches (457mm) represent the rim diameter or called the wheel diameter that can be mounted on.
InchesMetric
Diameter32.1"815 mm
Tread Width10.8"275 mm
Rim Diameter18"457 mm
Sidewall Height7"179 mm
Circumference100.8"2560 mm
Revolutions629"391 mm
tire diameter
10.8"
32.1"
Tire Side
Tire Circumference
100.8"
18"
7"
629 Revs/Mile

How tall is a 275/65R18 tire’s height?

The 275/65R18 has an overall diameter of 32.1 inches or 815 mm tall (measured from the outside edges of the wheel)

How wide is a 275/65R18 tire’s width?

The 275/65R18 has a width of 10.8 inches or 275 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 275/65R18 tire sidewall height?

The 275/65R18 has a sidewall height of 7 inches or 179 mm tall. It’s measured from the rim to the outer edge of the tire.

What size rim do you need for 275/65R18?

The 275/65R18 tire has a size rim of 18 inches or 457 mm. This number represents the distance between the two bead seat areas where the tire is sealed onto the wheel.

How many revolutions for 275/65R18 per mile or kilometer?

The 275/65R18 performs 629 revolutions per mile or 391 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 275/65R18 tire circumference?

The circumference of 275/65R18 is 100.8 inches or 2560 mm.

What’s wider or narrow than 275/65R18 is acceptable?

You can replace the 275/65R18 tires that are within ±3% of the overall tire diameter. In this case, it’s between 31.1 and 33.1 inches (791mm to 839 mm). Check our tire size chart here or the tire size calculator tool here to find your size.


Tire Size Chart for 18" Wheels:

23″ Tire Diameter

24″ Tire Diameter

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

38″ Tire Diameter



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