225/40R14 Conversion

When converted to inches, 225/40R14 is equivalent to 21.1x8.9R14.

225/40R14 tire has a section width of 8.9 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 14 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 3.5 inches (90 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 21.1 inches (536 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 66.3 inches (1683 mm) is the outer perimeter of the tire. Tire revolutions indicate the number of times a tire revolves while it covers the distance in miles or kilometers. 225/40R14 tire makes 956 revolutions per mile (594 revolutions per kilometer).

225/40R14 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 225/40R14 tire can be replaced with 17 compatible tire sizes. Select optional plus size to see its specs.

Tire Size	Overall Diameter	Difference
165/50R14	20.6" (522 mm)	-2.6%
155/55R14	20.7" (526 mm)	-1.9%
215/40R14	20.8" (528 mm)	-1.5%
105/70R15	20.8" (529 mm)	-1.3%
165/45R15	20.8" (529 mm)	-1.3%
125/70R14	20.9" (532 mm)	-0.7%
195/45R14	20.9" (532 mm)	-0.7%
175/50R14	20.9" (532 mm)	-0.7%
255/35R14	21" (534 mm)	-0.4%
165/55R14	21.2" (538 mm)	0.4%
165/40R16	21.2" (538 mm)	0.4%
205/45R14	21.3" (540 mm)	0.7%
185/50R14	21.3" (542 mm)	1.1%
115/70R15	21.4" (543 mm)	1.3%
145/65R14	21.4" (544 mm)	1.5%
185/45R15	21.5" (547 mm)	2.1%
165/50R15	21.5" (547 mm)	2.1%