What is a 285/30R21 tire width?
The 285/30R21 has a width of 11.2 inches or 285 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 285/30R21 tire’s height?
The overall diameter of a 285/30R21 is 27.8 inches or 705 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 285/30R21?
The size rim of a 285/30R21 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 285/30R21 tire sidewall’s height?
The sidewall height of a 285/30R21 is 3.4 inches or 86 mm tall. It’s measured from the rim to the outer edge of the tire.
What about 285/30R21 tire circumference?
285/30R21 tire has a circumference of 87.3 inches or 2217 mm
How many revolutions for 285/30R21 per mile & kilometer?
The 285/30R21 performs 451 revolutions per kilometer or 726 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 285/30R21 is acceptable?
You can replace the 285/30R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 27 and 28.6 inches (684mm to 726 mm). Check our tire size chart here or the tire size calculator tool here to find your size.
