305/35R21 Tire Size in Inches

305/35R21 is a metric tire size representation, which defines that the tires have a width of 305 mm, 35 is the aspect ratio and a rim diameter of 21 inches. In the imperial system the tire size 305/35R21 equates to a 29.4×12R21 that is commonly used in the automotive industry. So Converting 305/35R21 in inches the tires have a length of 29.4 inches, a width of 12 inches, a sidewall height of 4.2 inches and The number of complete resolutions made by the corresponding tire size is equal to 686 per mile with a circumference of 92.3 inches.

305/35R21 tire size in inches

305/35R21inchesmm
Tire Diameter29.4 inches747 mm
Tread Width12 inches305 mm
Rim Diameter21 inches533 mm
Sidewall Height4.2 inches107 mm
Circumference92.3 inches2346 mm
Revolutions686 per mile426 per km

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305/35R21 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 305/35R21 tires.

Tire Size Overall Diameter Difference
275/35R21 28.5″ (725 mm) -2.9%
275/30R22 28.5″ (725 mm) -2.9%
335/25R22 28.6″ (727 mm) -2.7%
245/40R21 28.7″ (729 mm) -2.4%
325/30R21 28.7″ (729 mm) -2.4%
245/35R22 28.8″ (731 mm) -2.1%
285/30R22 28.8″ (731 mm) -2.1%
285/35R21 28.9″ (733 mm) -1.9%
305/25R23 29″ (736 mm) -1.5%
255/40R21 29″ (737 mm) -1.3%
255/35R22 29″ (737 mm) -1.3%
295/30R22 29″ (737 mm) -1.3%
295/35R21 29.1″ (739 mm) -1.1%
315/25R23 29.2″ (742 mm) -0.7%
305/30R22 29.3″ (743 mm) -0.5%
265/35R22 29.3″ (745 mm) -0.3%
235/45R21 29.3″ (745 mm) -0.3%
265/40R21 29.3″ (745 mm) -0.3%
315/30R22 29.5″ (749 mm) 0.3%
275/35R22 29.6″ (751 mm) 0.5%
275/40R21 29.6″ (753 mm) 0.8%
245/45R21 29.6″ (753 mm) 0.8%
315/35R21 29.6″ (753 mm) 0.8%
285/35R22 29.9″ (759 mm) 1.6%
285/40R21 30″ (761 mm) 1.9%
295/30R23 30″ (762 mm) 2%
255/45R21 30″ (763 mm) 2.1%
255/40R22 30″ (763 mm) 2.1%
295/35R22 30.1″ (765 mm) 2.4%
295/40R21 30.3″ (769 mm) 2.9%

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