255/50R21 In Inches

What size tire is 255/50R21 in Inches?

The 255/50R21 equivalent to 31x10R21 in inches, as follow:

  • 31 inches (788mm) stand for the tire diameter, also referred to as the tire height
  • 10 inches (255mm) 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.
InchesMetric
Diameter31"788 mm
Tread Width10"255 mm
Rim Diameter21"533 mm
Sidewall Height5"128 mm
Circumference97.7"2482 mm
Revolutions649"403 mm
tire diameter
10"
31"
Tire Side
Tire Circumference
97.7"
21"
5"
649 Revs/Mile

What is a 255/50R21 tire width?

The 255/50R21 has a width of 10 inches or 255 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 255/50R21 tire’s height?

The overall diameter of a 255/50R21 is 31.1 inches or 789 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 255/50R21?

The size rim of a 255/50R21 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 255/50R21 tire sidewall’s height?

The sidewall height of a 255/50R21 is 5 inches or 128 mm tall. It’s measured from the rim to the outer edge of the tire.

What about 255/50R21 tire circumference?

255/50R21 tire has a circumference of 97.7 inches or 2482 mm

How many revolutions for 255/50R21 per mile & kilometer?

The 255/50R21 performs 403 revolutions per kilometer or 649 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 255/50R21 is acceptable?

You can replace the 255/50R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 30.2 and 32 inches (765mm to 813 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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