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).
| 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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 from $49.64 |
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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% |