145R12 Tires

145R12 Conversion

When converted to inches, 145R12 is equivalent to 21.1x5.7R12.

145R12 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 4.6 inches (116 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 21.1 inches (537 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 66.3 inches (1686.2 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. 145R12 tire makes 956 revolutions per mile (593 revolutions per kilometer).

145R12 Section Width
5.7"
21.1"
145R12 Tire Side
Tire Circumference
66.3"
12"
4.6"
956 Revs/Mile
Metric Inches
Overall Diameter (Tire Height) 537 mm 21.1"
Tread Width 145 mm 5.7"
Rim Diameter 304.8 mm 12"
Sidewall Height 116 mm 4.6"
Circumference 1686.2 mm 66.3"
Revolutions 593 per km 956 per mile
Best Prices on 145R12 Tires
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Priority Tire from $49.64

145R12 Replacement Tire Sizes

Replacement tires have to be within 3% of the original tire's overall diameter. 145R12 tire can be replaced with 34 compatible tire sizes. Select optional plus size to see its specs.

Tire Size Overall Diameter Difference
135/80R12 20.5" (521 mm) -3%
165/50R14 20.6" (522 mm) -2.8%
175/55R13 20.6" (522 mm) -2.8%
155/70R12 20.6" (523 mm) -2.6%
155/55R14 20.7" (526 mm) -2%
165/60R13 20.8" (528 mm) -1.7%
215/40R14 20.8" (528 mm) -1.7%
125/80R13 20.9" (530 mm) -1.3%
175/50R14 20.9" (532 mm) -0.9%
155/65R13 20.9" (532 mm) -0.9%
195/45R14 20.9" (532 mm) -0.9%
225/45R13 20.9" (532 mm) -0.9%
125/70R14 20.9" (532 mm) -0.9%
185/55R13 21" (534 mm) -0.6%
255/35R14 21" (534 mm) -0.6%
255/40R13 21" (534 mm) -0.6%
145/70R13 21" (534 mm) -0.6%
225/40R14 21.1" (536 mm) -0.2%
205/50R13 21.1" (536 mm) -0.2%
165/70R12 21.1" (537 mm) 0%
145/80R12 21.1" (537 mm) 0%
165/55R14 21.2" (538 mm) 0.2%
205/45R14 21.3" (540 mm) 0.6%
175/60R13 21.3" (540 mm) 0.6%
185/50R14 21.3" (542 mm) 0.9%
145/65R14 21.4" (544 mm) 1.3%
195/55R13 21.4" (544 mm) 1.3%
165/65R13 21.4" (544 mm) 1.3%
215/50R13 21.5" (546 mm) 1.7%
135/80R13 21.5" (546 mm) 1.7%
155/70R13 21.6" (548 mm) 2%
185/60R13 21.7" (552 mm) 2.8%
155/80R12 21.8" (553 mm) 3%
155R12 21.8" (553 mm) 3%