325/25R21 Conversion

When converted to inches, 325/25R21 is equivalent to 27.4x12.8R21.

325/25R21 tire has a section width of 12.8 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 21 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 3.2 inches (81 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 27.4 inches (695 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 86 inches (2182.3 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. 325/25R21 tire makes 737 revolutions per mile (458 revolutions per kilometer).

325/25R21 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 325/25R21 tire can be replaced with 23 compatible tire sizes. Select optional plus size to see its specs.

Tire Size	Overall Diameter	Difference
235/30R21	26.6" (675 mm)	-2.9%
295/25R21	26.8" (681 mm)	-2%
245/30R21	26.8" (681 mm)	-2%
375/20R21	26.9" (683 mm)	-1.7%
305/25R21	27" (685 mm)	-1.4%
255/30R21	27" (687 mm)	-1.2%
265/25R22	27.2" (691 mm)	-0.6%
265/30R21	27.3" (693 mm)	-0.3%
225/30R22	27.4" (695 mm)	0%
235/35R21	27.4" (697 mm)	0.3%
275/25R22	27.4" (697 mm)	0.3%
275/30R21	27.5" (699 mm)	0.6%
235/30R22	27.6" (701 mm)	0.9%
285/25R22	27.6" (701 mm)	0.9%
285/30R21	27.8" (705 mm)	1.4%
245/35R21	27.8" (705 mm)	1.4%
245/30R22	27.8" (707 mm)	1.7%
295/25R22	27.8" (707 mm)	1.7%
295/30R21	28" (711 mm)	2.3%
255/35R21	28" (711 mm)	2.3%
305/25R22	28" (711 mm)	2.3%
355/25R21	28" (711 mm)	2.3%
255/30R22	28.1" (713 mm)	2.6%