255/70R18 Tire Size in Inches

255/70R18 is a metric tire size representation, which defines that the tires have a width of 255 mm, 70 is the aspect ratio and a rim diameter of 18 inches. In the imperial system the tire size 255/70R18 equates to a 32.1×10R18 that is commonly used in the automotive industry. So Converting 255/70R18 in inches the tires have a length of 32.1 inches, a width of 10 inches, a sidewall height of 7 inches and The number of complete resolutions made by the corresponding tire size is equal to 629 per mile with a circumference of 100.8 inches.

255/70R18 tire size in inches

255/70R18inchesmm
Tire Diameter32.1 inches815 mm
Tread Width10 inches255 mm
Rim Diameter18 inches457 mm
Sidewall Height7 inches179 mm
Circumference100.8 inches2559 mm
Revolutions629 per mile391 per km

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255/70R18 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 255/70R18 tires.

Tire Size Overall Diameter Difference
285/50R20 31.3″ (794 mm) -2.6%
225/75R18 31.3″ (795 mm) -2.5%
285/55R19 31.4″ (797 mm) -2.2%
285/60R18 31.5″ (799 mm) -2%
265/65R18 31.5″ (801 mm) -1.7%
245/70R18 31.5″ (801 mm) -1.7%
245/60R20 31.6″ (802 mm) -1.6%
295/50R20 31.7″ (804 mm) -1.3%
235/75R18 31.9″ (809 mm) -0.7%
275/55R20 31.9″ (810 mm) -0.6%
225/70R19.5 31.9″ (811 mm) -0.5%
305/50R20 32″ (814 mm) -0.1%
255/60R20 32″ (814 mm) -0.1%
275/65R18 32.1″ (815 mm) 0%
255/65R19 32.1″ (815 mm) 0%
285/55R20 32.4″ (822 mm) 0.9%
305/60R18 32.4″ (823 mm) 1%
315/50R20 32.4″ (824 mm) 1.1%
265/60R20 32.5″ (826 mm) 1.3%
285/65R18 32.6″ (827 mm) 1.5%
265/70R18 32.6″ (829 mm) 1.7%
295/55R20 32.8″ (832 mm) 2.1%
375/50R18 32.8″ (833 mm) 2.2%
325/50R20 32.8″ (834 mm) 2.3%
275/60R20 33″ (838 mm) 2.8%
245/70R19.5 33″ (839 mm) 2.9%

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