Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 32/10-17 | 37/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32 (812.8) | 37.03 (940.6) | 5.03 (127.8) 15.7% |
| Width inches (mm) | 10 (254) | 12.52 (318) | 2.52 (64) 25.2% |
| Circum. inches (mm) | 100.53 (2553.49) | 116.34 (2954.98) | 15.81 (401.5) 15.7% |
| Sidewall Height inches (mm) | 7.5 (190.5) | 10.02 (254.4) | 2.52 (63.9) 33.5% |
| Revolutions per mile (km) | 630.25 (391.62) | 544.62 (338.41) | -85.63 (-53.21) -13.6% |
37/12.5-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.14 mph (37.25 km/h) |
| 25 mph (40.23 km/h) | 28.93 mph (46.56 km/h) |
| 30 mph (48.28 km/h) | 34.72 mph (55.87 km/h) |
| 35 mph (56.33 km/h) | 40.5 mph (65.18 km/h) |
| 40 mph (64.37 km/h) | 46.29 mph (74.5 km/h) |
| 45 mph (72.42 km/h) | 52.08 mph (83.81 km/h) |
| 50 mph (80.47 km/h) | 57.86 mph (93.12 km/h) |
| 55 mph (88.51 km/h) | 63.65 mph (102.43 km/h) |
| 60 mph (96.56 km/h) | 69.43 mph (111.74 km/h) |
| 65 mph (104.61 km/h) | 75.22 mph (121.06 km/h) |
| 70 mph (112.65 km/h) | 81.01 mph (130.37 km/h) |
| 75 mph (120.7 km/h) | 86.79 mph (139.68 km/h) |
| 80 mph (128.75 km/h) | 92.58 mph (148.99 km/h) |
| 85 mph (136.79 km/h) | 98.36 mph (158.3 km/h) |
| 90 mph (144.84 km/h) | 104.15 mph (167.62 km/h) |
| 95 mph (152.89 km/h) | 109.94 mph (176.93 km/h) |
| 100 mph (160.93 km/h) | 115.72 mph (186.24 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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