285/40R20 Tires

285/40R20 Conversion

When converted to inches, 285/40R20 is equivalent to 29x11.2R20.

285/40R20 tire has a section width of 11.2 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 4.5 inches (114 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29 inches (736 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 91.1 inches (2311 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. 285/40R20 tire makes 695 revolutions per mile (433 revolutions per kilometer).

285/40R20 Section Width
11.2"
29"
285/40R20 Tire Side
Tire Circumference
91.1"
20"
4.5"
695 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 736 mm 29"
Tread Width 285 mm 11.2"
Rim Diameter 508 mm 20"
Sidewall Height 114 mm 4.5"
Circumference 2311 mm 91.1"
Revolutions 433 per km 695 per mile

285/40R20 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 285/40R20 tire can be replaced with 44 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
295/35R20 28.1" (714 mm) -3%
345/30R20 28.2" (716 mm) -2.7%
305/30R21 28.2" (717 mm) -2.6%
315/25R22 28.2" (717 mm) -2.6%
265/35R21 28.3" (719 mm) -2.3%
265/30R22 28.3" (719 mm) -2.3%
265/40R20 28.3" (720 mm) -2.2%
235/45R20 28.3" (720 mm) -2.2%
305/35R20 28.4" (722 mm) -1.9%
315/30R21 28.5" (723 mm) -1.8%
275/30R22 28.5" (725 mm) -1.5%
275/35R21 28.5" (725 mm) -1.5%
335/25R22 28.6" (727 mm) -1.2%
245/45R20 28.7" (728 mm) -1.1%
315/35R20 28.7" (728 mm) -1.1%
275/40R20 28.7" (728 mm) -1.1%
245/40R21 28.7" (729 mm) -1%
325/30R21 28.7" (729 mm) -1%
245/35R22 28.8" (731 mm) -0.7%
285/30R22 28.8" (731 mm) -0.7%
285/35R21 28.9" (733 mm) -0.4%
325/35R20 29" (736 mm) 0%
295/30R22 29" (737 mm) 0.1%
255/35R22 29" (737 mm) 0.1%
255/40R21 29" (737 mm) 0.1%
255/45R20 29.1" (738 mm) 0.3%
295/35R21 29.1" (739 mm) 0.4%
145/80R20 29.1" (740 mm) 0.5%
305/30R22 29.3" (743 mm) 1%
235/50R20 29.3" (744 mm) 1.1%
295/40R20 29.3" (744 mm) 1.1%
265/40R21 29.3" (745 mm) 1.2%
265/35R22 29.3" (745 mm) 1.2%
235/45R21 29.3" (745 mm) 1.2%
265/45R20 29.4" (746 mm) 1.4%
305/35R21 29.4" (747 mm) 1.5%
315/30R22 29.5" (749 mm) 1.8%
275/35R22 29.6" (751 mm) 2%
305/40R20 29.6" (752 mm) 2.2%
315/35R21 29.6" (753 mm) 2.3%
245/45R21 29.6" (753 mm) 2.3%
275/40R21 29.6" (753 mm) 2.3%
245/50R20 29.7" (754 mm) 2.4%
275/45R20 29.8" (756 mm) 2.7%