What is a 315/45R21 tire width?
The 315/45R21 has a width of 12.4 inches or 315 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 315/45R21 tire’s height?
The 315/45R21 has an overall diameter of 32.2 inches or 817 mm tall (measured from the outside edges of the wheel)
What size rim do I need for 315/45R21?
The size rim of a 315/45R21 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 315/45R21 tire sidewall’s height?
The sidewall height of a 315/45R21 is 5.6 inches or 142 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.
What about 315/45R21 tire circumference?
315/45R21 tire has a circumference of 101.2 inches or 2570 mm
How many revolutions for 315/45R21 per mile & kilometer?
The 315/45R21 performs 389 revolutions per kilometer or 626 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 315/45R21 is acceptable?
You can replace the 315/45R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 31.2 and 33.2 inches (792mm to 842 mm). Check our tire size chart here or the tire size calculator tool here to find your size.
