Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/70-17 | 37/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.36 (872.8) | 37.03 (940.6) | 2.67 (67.8) 7.8% |
| Width inches (mm) | 12.4 (315) | 12.52 (318) | 0.12 (3) 1% |
| Circum. inches (mm) | 107.95 (2741.98) | 116.34 (2954.98) | 8.39 (213) 7.8% |
| Sidewall Height inches (mm) | 8.68 (220.5) | 10.02 (254.4) | 1.33 (33.9) 15.4% |
| Revolutions per mile (km) | 586.93 (364.7) | 544.62 (338.41) | -42.31 (-26.29) -7.2% |
37/12.5-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.55 mph (34.69 km/h) |
| 25 mph (40.23 km/h) | 26.94 mph (43.36 km/h) |
| 30 mph (48.28 km/h) | 32.33 mph (52.03 km/h) |
| 35 mph (56.33 km/h) | 37.72 mph (60.7 km/h) |
| 40 mph (64.37 km/h) | 43.11 mph (69.37 km/h) |
| 45 mph (72.42 km/h) | 48.5 mph (78.05 km/h) |
| 50 mph (80.47 km/h) | 53.88 mph (86.72 km/h) |
| 55 mph (88.51 km/h) | 59.27 mph (95.39 km/h) |
| 60 mph (96.56 km/h) | 64.66 mph (104.06 km/h) |
| 65 mph (104.61 km/h) | 70.05 mph (112.73 km/h) |
| 70 mph (112.65 km/h) | 75.44 mph (121.41 km/h) |
| 75 mph (120.7 km/h) | 80.83 mph (130.08 km/h) |
| 80 mph (128.75 km/h) | 86.21 mph (138.75 km/h) |
| 85 mph (136.79 km/h) | 91.6 mph (147.42 km/h) |
| 90 mph (144.84 km/h) | 96.99 mph (156.09 km/h) |
| 95 mph (152.89 km/h) | 102.38 mph (164.76 km/h) |
| 100 mph (160.93 km/h) | 107.77 mph (173.44 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 | 2518 | 2689 | 2878 | 3026 | 3120 | 3173 | 3368 | 3639 | 4229 |
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