305/35R21 In Inches

What size tire is 305/35R21 in Inches?

The 305/35R21 equivalent to 29.4x12R21 in inches, as follow:

  • 29.4 inches (747mm) 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
  • 21 inches (533mm) represent the rim diameter or called the wheel diameter that can be mounted on.
Diameter29.4"747 mm
Tread Width12"305 mm
Rim Diameter21"533 mm
Sidewall Height4.2"107 mm
Circumference92.4"2347 mm
Revolutions686"426 mm
tire diameter
Tire Side
Tire Circumference
686 Revs/Mile

What is a 305/35R21 tire width?

The 305/35R21 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.

What is 305/35R21 tire diameter?

The 305/35R21 has an overall diameter of 29.4 inches or 747 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 305/35R21?

The size rim of a 305/35R21 tire is 21 inches or 533 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 305/35R21 tire sidewall’s height?

The sidewall height of a 305/35R21 is 3.6 inches or 107 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.

What about 305/35R21 tire circumference?

305/35R21 tire has a circumference of 92.4 inches or 2347 mm

How many revolutions for 305/35R21 per mile & kilometer?

The 305/35R21 performs 426 revolutions per kilometer or 686 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 305/35R21 is acceptable?

You can replace the 305/35R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 28.5 and 30.3 inches (725mm to 769 mm). Check our tire size chart here or the tire size calculator tool here to find your size.

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Tire Size Chart for 21" Wheels:

26″ Tire Diameter

27″ Tire Diameter

28″ Tire Diameter

29″ Tire Diameter

30″ Tire Diameter

31″ Tire Diameter

32″ Tire Diameter

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