What is a 255/30R21 tire width?
The 255/30R21 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 tall is a 255/30R21 tire’s height?
The 255/30R21 has an overall diameter of 27 inches or 687 mm tall (measured from the outside edges of the wheel)
What size rim do I need for 255/30R21?
The size rim of a 255/30R21 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 255/30R21 tire sidewall’s height?
The sidewall height of a 255/30R21 is 3 inches or 77 mm tall. It’s measured from the rim to the outer edge of the tire.
What about 255/30R21 tire circumference?
255/30R21 tire has a circumference of 84.8 inches or 2154 mm
How many revolutions for 255/30R21 per mile & kilometer?
The 255/30R21 performs 464 revolutions per kilometer or 747 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 255/30R21 is acceptable?
You can replace the 255/30R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 26.2 and 27.8 inches (666mm to 708 mm). Check our tire size chart here or the tire size calculator tool here to find your size.
