What is a 275/30R21 tire width?
The 275/30R21 has a width of 10.8 inches or 275 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 275/30R21 tire’s height?
The overall diameter of a 275/30R21 is 27.5 inches or 699 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 275/30R21?
The size rim of a 275/30R21 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 275/30R21 tire sidewall’s height?
The sidewall height of a 275/30R21 is 3.2 inches or 83 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.
What about 275/30R21 tire circumference?
275/30R21 tire has a circumference of 86.4 inches or 2195 mm
How many revolutions for 275/30R21 per mile & kilometer?
The 275/30R21 performs 456 revolutions per kilometer or 734 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 275/30R21 is acceptable?
You can replace the 275/30R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 26.7 and 28.3 inches (678mm to 720 mm). Check our tire size chart here or the tire size calculator tool here to find your size.

