305/25R21 Tire Size in Inches

305/25R21 is a metric tire size representation, which defines that the tires have a width of 305 mm, 25 is the aspect ratio and a rim diameter of 21 inches. In the imperial system the tire size 305/25R21 equates to a 27×12R21 that is commonly used in the automotive industry. So Converting 305/25R21 in inches the tires have a length of 27 inches, a width of 12 inches, a sidewall height of 3 inches and The number of complete resolutions made by the corresponding tire size is equal to 747 per mile with a circumference of 84.8 inches.

305/25R21 tire size in inches

305/25R21inchesmm
Tire Diameter27 inches685 mm
Tread Width12 inches305 mm
Rim Diameter21 inches533 mm
Sidewall Height3 inches76 mm
Circumference84.8 inches2151 mm
Revolutions747 per mile465 per km

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305/25R21 Equivalent Tire Sizes for replacement

If you are replacing your tires, always keep in mind that they are compatible with your vehicle so that the impact on the overall performance of your vehicle can be reduced. Here we have listed some tire size that is equivalent to 305/25R21 tires.

Tire Size Overall Diameter Difference
275/25R21 26.4″ (671 mm) -2%
235/30R21 26.6″ (675 mm) -1.5%
295/25R21 26.8″ (681 mm) -0.6%
245/30R21 26.8″ (681 mm) -0.6%
375/20R21 26.9″ (683 mm) -0.3%
255/30R21 27″ (687 mm) 0.3%
265/25R22 27.2″ (691 mm) 0.9%
265/30R21 27.3″ (693 mm) 1.2%
325/25R21 27.4″ (695 mm) 1.5%
225/30R22 27.4″ (695 mm) 1.5%
235/35R21 27.4″ (697 mm) 1.8%
275/25R22 27.4″ (697 mm) 1.8%
275/30R21 27.5″ (699 mm) 2%
285/25R22 27.6″ (701 mm) 2.3%
235/30R22 27.6″ (701 mm) 2.3%
245/35R21 27.8″ (705 mm) 2.9%
285/30R21 27.8″ (705 mm) 2.9%

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