What is a 245/40R21 tire width?
The 245/40R21 has a width of 9.6 inches or 245 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 245/40R21 tire’s height?
The overall diameter of a 245/40R21 is 28.7 inches or 729 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 245/40R21?
The size rim of a 245/40R21 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 245/40R21 tire sidewall’s height?
The sidewall height of a 245/40R21 is 3.9 inches or 98 mm tall. It’s measured from the wheel rim to the top of the tread, expressed as a percentage of tire width.
What about 245/40R21 tire circumference?
245/40R21 tire has a circumference of 90.2 inches or 2291 mm
How many revolutions for 245/40R21 per mile & kilometer?
The 245/40R21 performs 436 revolutions per kilometer or 702 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 245/40R21 is acceptable?
You can replace the 245/40R21 tires that are within ±3% of the overall tire diameter. In this case, it’s between 27.8 and 29.6 inches (707mm to 751 mm). Check our tire size chart here or the tire size calculator tool here to find your size.
