Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/70-16 | 37/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.61 (777.4) | 37.03 (940.48) | 6.42 (163.08) 21% |
| Width inches (mm) | 10.43 (265) | 12.52 (318) | 2.09 (53) 20% |
| Circum. inches (mm) | 96.15 (2442.27) | 116.32 (2954.61) | 20.17 (512.33) 21% |
| Sidewall Height inches (mm) | 7.3 (185.5) | 8.51 (216.24) | 1.21 (30.74) 16.6% |
| Revolutions per mile (km) | 658.95 (409.45) | 544.69 (338.45) | -114.26 (-71) -17.3% |
37/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.2 mph (38.94 km/h) |
| 25 mph (40.23 km/h) | 30.24 mph (48.67 km/h) |
| 30 mph (48.28 km/h) | 36.29 mph (58.41 km/h) |
| 35 mph (56.33 km/h) | 42.34 mph (68.14 km/h) |
| 40 mph (64.37 km/h) | 48.39 mph (77.88 km/h) |
| 45 mph (72.42 km/h) | 54.44 mph (87.61 km/h) |
| 50 mph (80.47 km/h) | 60.49 mph (97.35 km/h) |
| 55 mph (88.51 km/h) | 66.54 mph (107.08 km/h) |
| 60 mph (96.56 km/h) | 72.59 mph (116.82 km/h) |
| 65 mph (104.61 km/h) | 78.64 mph (126.55 km/h) |
| 70 mph (112.65 km/h) | 84.68 mph (136.29 km/h) |
| 75 mph (120.7 km/h) | 90.73 mph (146.02 km/h) |
| 80 mph (128.75 km/h) | 96.78 mph (155.76 km/h) |
| 85 mph (136.79 km/h) | 102.83 mph (165.49 km/h) |
| 90 mph (144.84 km/h) | 108.88 mph (175.23 km/h) |
| 95 mph (152.89 km/h) | 114.93 mph (184.96 km/h) |
| 100 mph (160.93 km/h) | 120.98 mph (194.69 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386 | 1610 | 1734 | 1811 | 1893 | 1952 | 2017 | 2094 | 2200 | 2306 | 2424 | 2519 | 2690 | 2878 | 3026 | 3120 | 3173 | 3368 | 3639 | 4229 |
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