145/70R12 Tires

145/70R12 Conversion

When converted to inches, 145/70R12 is equivalent to 20x5.7R12.

145/70R12 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 12 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 4 inches (102 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 20 inches (509 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 62.8 inches (1598.3 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. 145/70R12 tire makes 1009 revolutions per mile (626 revolutions per kilometer).

145/70R12 Section Width
5.7"
20"
145/70R12 Tire Side
Tire Circumference
62.8"
12"
4"
1009 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 509 mm 20"
Tread Width 145 mm 5.7"
Rim Diameter 304.8 mm 12"
Sidewall Height 102 mm 4"
Circumference 1598.3 mm 62.8"
Revolutions 626 per km 1009 per mile

145/70R12 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 145/70R12 tire can be replaced with 16 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
105/80R13 19.6" (498 mm) -2.2%
165/60R12 19.8" (503 mm) -1.2%
105/70R14 19.8" (504 mm) -1%
145/60R13 19.8" (504 mm) -1%
125/80R12 19.9" (505 mm) -0.8%
175/50R13 19.9" (506 mm) -0.6%
195/45R13 19.9" (506 mm) -0.6%
165/55R13 20.2" (512 mm) 0.6%
195/40R14 20.2" (512 mm) 0.6%
145/65R13 20.4" (518 mm) 1.8%
115/70R14 20.4" (518 mm) 1.8%
135/70R13 20.5" (520 mm) 2.2%
135/80R12 20.5" (521 mm) 2.4%
165/50R14 20.6" (522 mm) 2.6%
175/55R13 20.6" (522 mm) 2.6%
155/70R12 20.6" (523 mm) 2.8%