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305/65R18 Tire Size in Inches

305/65R18 is a metric tire size representation, which defines that the tires have a width of 305 mm, 65 is the aspect ratio and a rim diameter of 18 inches. In the imperial system the tire size 305/65R18 equates to a 33.6×12R18 that is commonly used in the automotive industry. So Converting 305/65R18 in inches the tires have a length of 33.6 inches, a width of 12 inches, a sidewall height of 7.8 inches and The number of complete resolutions made by the corresponding tire size is equal to 601 per mile with a circumference of 105.5 inches.

305/65R18 tire size in inches

305/65R18inchesmm
Tire Diameter33.6 inches853 mm
Tread Width12 inches305 mm
Rim Diameter18 inches457 mm
Sidewall Height7.8 inches198 mm
Circumference105.5 inches2678 mm
Revolutions601 per mile373 per km

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305/65R18 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 305/65R18 tires.

Tire Size Overall Diameter Difference
265/70R18 32.6″ (829 mm) -2.8%
295/55R20 32.8″ (832 mm) -2.5%
375/50R18 32.8″ (833 mm) -2.3%
325/50R20 32.8″ (834 mm) -2.2%
275/60R20 33″ (838 mm) -1.8%
245/70R19.5 33″ (839 mm) -1.6%
295/65R18 33.1″ (841 mm) -1.4%
275/70R18 33.2″ (843 mm) -1.2%
305/55R20 33.2″ (844 mm) -1.1%
375/45R20 33.3″ (846 mm) -0.8%
325/60R18 33.3″ (847 mm) -0.7%
285/60R20 33.5″ (850 mm) -0.4%
285/70R18 33.7″ (857 mm) 0.5%
295/60R20 33.9″ (862 mm) 1.1%
355/50R20 34″ (864 mm) 1.3%
275/65R20 34.1″ (866 mm) 1.5%
295/70R18 34.3″ (871 mm) 2.1%
345/60R18 34.3″ (871 mm) 2.1%
305/60R20 34.4″ (874 mm) 2.5%
335/55R20 34.5″ (876 mm) 2.7%
285/65R20 34.6″ (878 mm) 2.9%

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