305/70R18 In Inches

What size tire is 305/70R18 in Inches?

The 305/70R18 equivalent to 34.8x12R18 in inches, as follow:

  • 34.8 inches (884mm) stand for the tire diameter, also referred to as the tire height
  • 12 inches (305mm) 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.
Diameter34.8"884 mm
Tread Width12"305 mm
Rim Diameter18"457 mm
Sidewall Height8.4"214 mm
Circumference109.3"2776 mm
Revolutions579"360 mm
tire diameter
Tire Side
Tire Circumference
579 Revs/Mile

What is a 305/70R18 tire width?

The 305/70R18 has a width of 12 inches or 305 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 305/70R18 tire’s height?

The overall diameter of a 305/70R18 is 34.8 inches or 885 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 305/70R18?

The size rim of a 305/70R18 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 305/70R18 tire sidewall’s height?

The sidewall height of a 305/70R18 is 7.8 inches or 214 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.

What about 305/70R18 tire circumference?

305/70R18 tire has a circumference of 109.3 inches or 2776 mm

How many revolutions for 305/70R18 per mile & kilometer?

The 305/70R18 performs 360 revolutions per kilometer or 579 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 305/70R18 is acceptable?

You can replace the 305/70R18 tires that are within ±3% of the overall tire diameter. In this case, it’s between 33.8 and 35.8 inches (858mm to 912 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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