215/40R15 Conversion

When converted to inches, 215/40R15 is equivalent to 21.8x8.5R15.

215/40R15 tire has a section width of 8.5 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 15 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 3.4 inches (86 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 21.8 inches (553 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 68.5 inches (1736.4 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. 215/40R15 tire makes 925 revolutions per mile (576 revolutions per kilometer).

215/40R15 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 215/40R15 tire can be replaced with 19 compatible tire sizes. Select optional plus size to see its specs.

Tire Size	Overall Diameter	Difference
165/40R16	21.2" (538 mm)	-2.7%
115/70R15	21.4" (543 mm)	-1.8%
185/45R15	21.5" (547 mm)	-1.1%
165/50R15	21.5" (547 mm)	-1.1%
245/35R15	21.8" (553 mm)	0%
165/45R16	21.8" (554 mm)	0.2%
215/35R16	21.9" (556 mm)	0.5%
195/45R15	21.9" (557 mm)	0.7%
175/50R15	21.9" (557 mm)	0.7%
125/70R15	21.9" (557 mm)	0.7%
195/40R16	22.1" (562 mm)	1.6%
165/55R15	22.2" (563 mm)	1.8%
165/40R17	22.2" (564 mm)	2%
205/45R15	22.2" (565 mm)	2.2%
185/50R15	22.3" (567 mm)	2.5%
155/60R15	22.3" (567 mm)	2.5%
115/70R16	22.4" (568 mm)	2.7%
135/60R16	22.4" (568 mm)	2.7%
145/65R15	22.4" (569 mm)	2.9%