145/80R20 Tires

145/80R20 Conversion

When converted to inches, 145/80R20 is equivalent to 29.1x5.7R20.

145/80R20 tire has a section width of 5.7 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 4.6 inches (116 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29.1 inches (740 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 91.4 inches (2323.6 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. 145/80R20 tire makes 693 revolutions per mile (430 revolutions per kilometer).

145/80R20 Section Width
5.7"
29.1"
145/80R20 Tire Side
Tire Circumference
91.4"
20"
4.6"
693 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 740 mm 29.1"
Tread Width 145 mm 5.7"
Rim Diameter 508 mm 20"
Sidewall Height 116 mm 4.6"
Circumference 2323.6 mm 91.4"
Revolutions 430 per km 693 per mile

145/80R20 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 145/80R20 tire can be replaced with 42 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
265/35R21 28.3" (719 mm) -2.8%
265/30R22 28.3" (719 mm) -2.8%
265/40R20 28.3" (720 mm) -2.7%
235/45R20 28.3" (720 mm) -2.7%
305/35R20 28.4" (722 mm) -2.4%
315/30R21 28.5" (723 mm) -2.3%
275/30R22 28.5" (725 mm) -2%
275/35R21 28.5" (725 mm) -2%
335/25R22 28.6" (727 mm) -1.8%
275/40R20 28.7" (728 mm) -1.6%
315/35R20 28.7" (728 mm) -1.6%
245/45R20 28.7" (728 mm) -1.6%
325/30R21 28.7" (729 mm) -1.5%
245/40R21 28.7" (729 mm) -1.5%
285/30R22 28.8" (731 mm) -1.2%
245/35R22 28.8" (731 mm) -1.2%
285/35R21 28.9" (733 mm) -0.9%
285/40R20 29" (736 mm) -0.5%
325/35R20 29" (736 mm) -0.5%
255/40R21 29" (737 mm) -0.4%
255/35R22 29" (737 mm) -0.4%
295/30R22 29" (737 mm) -0.4%
255/45R20 29.1" (738 mm) -0.3%
295/35R21 29.1" (739 mm) -0.1%
305/30R22 29.3" (743 mm) 0.4%
235/50R20 29.3" (744 mm) 0.5%
295/40R20 29.3" (744 mm) 0.5%
235/45R21 29.3" (745 mm) 0.7%
265/40R21 29.3" (745 mm) 0.7%
265/35R22 29.3" (745 mm) 0.7%
265/45R20 29.4" (746 mm) 0.8%
305/35R21 29.4" (747 mm) 0.9%
315/30R22 29.5" (749 mm) 1.2%
275/35R22 29.6" (751 mm) 1.5%
305/40R20 29.6" (752 mm) 1.6%
245/45R21 29.6" (753 mm) 1.8%
315/35R21 29.6" (753 mm) 1.8%
275/40R21 29.6" (753 mm) 1.8%
245/50R20 29.7" (754 mm) 1.9%
275/45R20 29.8" (756 mm) 2.2%
285/35R22 29.9" (759 mm) 2.6%
285/40R21 30" (761 mm) 2.8%