37x12.50R18 tire size
A 37x12.50R18 tire is 37.00 in (939.8 mm) tall and 12.50 in (317.5 mm) wide, and turns 545 revolutions per mile.
- 37.00 inOverall diameter
- 9.50 inSidewall height
- 545Revolutions per mile
- 318/76R18Metric equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 37.00 in | 939.8 mm |
| Section width | 12.50 in | 317.5 mm |
| Sidewall height | 9.50 in | 241.3 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 116.24 in | 2,952 mm |
| Revolutions per mile | 545 | |
| Metric equivalent | 318/76R18 (rounded) | |
37x12.50R18 is a flotation size: 37.0 inches tall and 12.50 inches wide on a 18-inch wheel, which works out to roughly 318/76R18 in metric terms.
Its overall diameter is 37.00 inches, so it rolls 116.2 inches per revolution and turns about 545 times per mile.
9 other sizes in this list are within 3% of that diameter.
Compare 37x12.50R18 with plausible swaps
- 315/75R17 vs 37x12.50R18 (−3.78%)
- 37x12.50R17 vs 37x12.50R18 (0.00%)
- 37x13.50R17 vs 37x12.50R18 (0.00%)
- 315/70R18 vs 37x12.50R18 (−4.43%)
- 37x12.50R18 vs 37x13.50R18 (0.00%)
- 37x12.50R18 vs 325/60R20 (−4.45%)
- 37x12.50R18 vs 37x12.50R20 (0.00%)
- 37x12.50R18 vs 37x13.50R20 (0.00%)
- 37x12.50R18 vs 38x13.50R20 (+2.70%)
- 37x12.50R18 vs 38x15.50R20 (+2.70%)
Sizes within 3% of 37.00 in diameter
- 37x12.50R17 37.00 in (0.00%)
- 37x13.50R17 37.00 in (0.00%)
- 37x13.50R18 37.00 in (0.00%)
- 37x12.50R20 37.00 in (0.00%)
- 37x13.50R20 37.00 in (0.00%)
- 37x13.50R22 37.00 in (0.00%)
- 37x13.50R24 37.00 in (0.00%)
- 38x13.50R20 38.00 in (+2.70%)
- 38x15.50R20 38.00 in (+2.70%)
Open 37x12.50R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.