How tall is a 255/45R21 tire’s height?
The 255/45R21 has an overall diameter of 30 inches or 763 mm tall (measured from the outside edges of the wheel)
How wide is a 255/45R21 tire’s width?
The 255/45R21 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 outer sidewall’s widest point and the inner 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 a 255/45R21 tire sidewall height?
The 255/45R21 has a sidewall height of 4.5 inches or 115 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.
What size rim do you need for 255/45R21?
The 255/45R21 tire has a size rim of 21 inches or 533 mm. This number represents the distance between the two bead seat areas where the tire is sealed onto the wheel.
How many revolutions for 255/45R21 per mile or kilometer?
The 255/45R21 performs 673 revolutions per mile or 418 revolutions per kilometer. Revolutions per mile indicate the number of times a tire revolves while it covers the distance of one mile/kilometer
How about 255/45R21 tire circumference?
The circumference of 255/45R21 is 94.2 inches or 2393 mm.
What’s wider or narrow than 255/45R21 is acceptable?
You can replace the 255/45R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 29.1 and 30.9 inches (740mm to 786 mm). Check our tire size chart here or the tire size calculator tool here to find your size.
