255/55R20 Tires

255/55R20 Conversion

When converted to inches, 255/55R20 is equivalent to 31x10R20.

255/55R20 tire has a section width of 10 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 20 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 5.5 inches (140 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 31 inches (788 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 97.3 inches (2474.3 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. 255/55R20 tire makes 651 revolutions per mile (404 revolutions per kilometer).

255/55R20 Section Width
10"
31"
255/55R20 Tire Side
Tire Circumference
97.3"
20"
5.5"
651 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 788 mm 31"
Tread Width 255 mm 10"
Rim Diameter 508 mm 20"
Sidewall Height 140 mm 5.5"
Circumference 2474.3 mm 97.3"
Revolutions 404 per km 651 per mile

255/55R20 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 255/55R20 tire can be replaced with 29 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
295/35R22 30.1" (765 mm) -2.9%
235/55R20 30.2" (766 mm) -2.8%
295/40R21 30.3" (769 mm) -2.4%
265/40R22 30.4" (771 mm) -2.2%
265/45R21 30.4" (771 mm) -2.2%
305/35R22 30.4" (773 mm) -1.9%
265/50R20 30.5" (774 mm) -1.8%
295/45R20 30.5" (774 mm) -1.8%
275/40R22 30.7" (779 mm) -1.1%
315/35R22 30.7" (779 mm) -1.1%
275/45R21 30.7" (781 mm) -0.9%
305/45R20 30.8" (782 mm) -0.8%
275/50R20 30.9" (784 mm) -0.5%
315/40R21 30.9" (785 mm) -0.4%
325/35R22 31" (787 mm) -0.1%
285/40R22 31" (787 mm) -0.1%
285/45R21 31.1" (789 mm) 0.1%
255/45R22 31.1" (789 mm) 0.1%
255/50R21 31.1" (789 mm) 0.1%
325/40R21 31.2" (793 mm) 0.6%
285/50R20 31.3" (794 mm) 0.8%
295/40R22 31.3" (795 mm) 0.9%
265/45R22 31.4" (797 mm) 1.1%
245/60R20 31.6" (802 mm) 1.8%
305/40R22 31.6" (803 mm) 1.9%
295/50R20 31.7" (804 mm) 2%
275/45R22 31.8" (807 mm) 2.4%
275/50R21 31.9" (809 mm) 2.7%
275/55R20 31.9" (810 mm) 2.8%