Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-16.5 | 37/12.5-16.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.97 (786.6) | 37.03 (940.62) | 6.06 (154.02) 19.6% |
| Width inches (mm) | 9.65 (245) | 12.52 (318) | 2.87 (73) 29.8% |
| Circum. inches (mm) | 97.29 (2471.18) | 116.34 (2955.04) | 19.05 (483.87) 19.6% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 10.27 (260.76) | 3.03 (77.01) 41.9% |
| Revolutions per mile (km) | 651.25 (404.66) | 544.61 (338.4) | -106.64 (-66.26) -16.4% |
37/12.5-16.5 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.92 mph (38.49 km/h) |
| 25 mph (40.23 km/h) | 29.9 mph (48.11 km/h) |
| 30 mph (48.28 km/h) | 35.87 mph (57.73 km/h) |
| 35 mph (56.33 km/h) | 41.85 mph (67.36 km/h) |
| 40 mph (64.37 km/h) | 47.83 mph (76.98 km/h) |
| 45 mph (72.42 km/h) | 53.81 mph (86.6 km/h) |
| 50 mph (80.47 km/h) | 59.79 mph (96.22 km/h) |
| 55 mph (88.51 km/h) | 65.77 mph (105.85 km/h) |
| 60 mph (96.56 km/h) | 71.75 mph (115.47 km/h) |
| 65 mph (104.61 km/h) | 77.73 mph (125.09 km/h) |
| 70 mph (112.65 km/h) | 83.71 mph (134.71 km/h) |
| 75 mph (120.7 km/h) | 89.69 mph (144.33 km/h) |
| 80 mph (128.75 km/h) | 95.66 mph (153.96 km/h) |
| 85 mph (136.79 km/h) | 101.64 mph (163.58 km/h) |
| 90 mph (144.84 km/h) | 107.62 mph (173.2 km/h) |
| 95 mph (152.89 km/h) | 113.6 mph (182.82 km/h) |
| 100 mph (160.93 km/h) | 119.58 mph (192.45 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 | 3025 | 3120 | 3173 | 3368 | 3639 | 4229 |
Better Fuel Economy Factory Ratios Increased Power
