245/55R18 In Inches

What size tire is 245/55R18 in Inches?

The 245/55R18 equivalent to 28.6x9.6R18 in inches, as follow:

  • 28.6 inches (727mm) stand for the tire diameter, also referred to as the tire height
  • 9.6 inches (245mm) 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.
Diameter28.6"727 mm
Tread Width9.6"245 mm
Rim Diameter18"457 mm
Sidewall Height5.3"135 mm
Circumference89.8"2281 mm
Revolutions705"438 mm
tire diameter
Tire Side
Tire Circumference
705 Revs/Mile

What is a 245/55R18 tire width?

The 245/55R18 has a width of 9.6 inches or 245 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 245/55R18 tire’s height?

The overall diameter of a 245/55R18 is 28.6 inches or 727 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 245/55R18?

The size rim of a 245/55R18 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 245/55R18 tire sidewall’s height?

The sidewall height of a 245/55R18 is 5.3 inches or 135 mm tall. It’s measured from the rim to the outer edge of the tire.

What about 245/55R18 tire circumference?

245/55R18 tire has a circumference of 89.8 inches or 2281 mm

How many revolutions for 245/55R18 per mile & kilometer?

The 245/55R18 performs 438 revolutions per kilometer or 705 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 245/55R18 is acceptable?

You can replace the 245/55R18 tires that are within ±3% of the overall tire diameter. In this case, it’s between 27.7 and 29.5 inches (705mm to 749 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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