325/65R18 In Inches

What size tire is 325/65R18 in Inches?

The 325/65R18 equivalent to 34.6x12.8R18 in inches, as follow:

  • 34.6 inches (880mm) stand for the tire diameter, also referred to as the tire height
  • 12.8 inches (325mm) 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
Diameter34.6"880 mm
Tread Width12.8"325 mm
Rim Diameter18"457 mm
Sidewall Height8.3"211 mm
Circumference108.7"2761 mm
Revolutions583"362 mm
tire diameter
12.8"
34.6"
Tire Side
Tire Circumference
108.7"
18"
8.3"
583 Revs/Mile

How big is a 325/65R18 tire’s height?

The overall diameter of a 325/65R18 is 34.6 inches or 879 mm tall (measurement of a tire’s outside diameter through its exact center when inflated with no load.

How wide is a 325/65R18 tire’s width?

The 325/65R18 has a width of 12.8 inches or 325 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 325/65R18 tire sidewall height?

The 325/65R18 has a sidewall height of 8.3 inches or 211 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.

What size rim do you need for 325/65R18?

The 325/65R18 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 325/65R18 per mile or kilometer?

The 325/65R18 performs 583 revolutions per mile or 362 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 325/65R18 tire circumference?

The circumference of 325/65R18 is 108.7 inches or 2761 mm.

What’s wider or narrow than 325/65R18 is acceptable?

You can replace the 325/65R18 tires that are within ±3% of the overall tire diameter. In this case, it’s between 33.6 and 35.6 inches (853mm to 905 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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