235/75R18 In Inches

What size tire is 235/75R18 in Inches?

The 235/75R18 equivalent to 31.9x9.3R18 in inches, as follow:

  • 31.9 inches (810mm) stand for the tire diameter, also referred to as the tire height
  • 9.3 inches (235mm) 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.
Diameter31.9"810 mm
Tread Width9.3"235 mm
Rim Diameter18"457 mm
Sidewall Height6.9"176 mm
Circumference100.2"2545 mm
Revolutions632"393 mm
tire diameter
Tire Side
Tire Circumference
632 Revs/Mile

What is a 235/75R18 tire width?

The 235/75R18 has a width of 9.3 inches or 235 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 235/75R18 tire’s height?

The overall diameter of a 235/75R18 is 31.9 inches or 809 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 235/75R18?

The size rim of a 235/75R18 tire is 18 inches or 457 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 235/75R18 tire sidewall’s height?

The sidewall height of a 235/75R18 is 6.5 inches or 176 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.

What about 235/75R18 tire circumference?

235/75R18 tire has a circumference of 100.2 inches or 2545 mm

How many revolutions for 235/75R18 per mile & kilometer?

The 235/75R18 performs 393 revolutions per kilometer or 632 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 235/75R18 is acceptable?

You can replace the 235/75R18 tires that are within ±3% of the overall tire diameter. In this case, it’s between 30.9 and 32.9 inches (785mm to 833 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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