Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 375/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 39.15 (994.3) | 17.74 (450.5) 82.8% |
| Width inches (mm) | 3.15 (80) | 14.76 (375) | 11.61 (295) 368.8% |
| Circum. inches (mm) | 67.26 (1708.4) | 122.98 (3123.69) | 55.72 (1415.29) 82.8% |
| Sidewall Height inches (mm) | 2.2 (56) | 11.07 (281.25) | 8.87 (225.25) 402.2% |
| Revolutions per mile (km) | 942.02 (585.34) | 515.21 (320.13) | -426.81 (-265.21) -45.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 36.57 mph (58.85 km/h) |
| 25 mph (40.23 km/h) | 45.71 mph (73.56 km/h) |
| 30 mph (48.28 km/h) | 54.85 mph (88.28 km/h) |
| 35 mph (56.33 km/h) | 64 mph (102.99 km/h) |
| 40 mph (64.37 km/h) | 73.14 mph (117.7 km/h) |
| 45 mph (72.42 km/h) | 82.28 mph (132.42 km/h) |
| 50 mph (80.47 km/h) | 91.42 mph (147.13 km/h) |
| 55 mph (88.51 km/h) | 100.56 mph (161.84 km/h) |
| 60 mph (96.56 km/h) | 109.71 mph (176.55 km/h) |
| 65 mph (104.61 km/h) | 118.85 mph (191.27 km/h) |
| 70 mph (112.65 km/h) | 127.99 mph (205.98 km/h) |
| 75 mph (120.7 km/h) | 137.13 mph (220.69 km/h) |
| 80 mph (128.75 km/h) | 146.27 mph (235.41 km/h) |
| 85 mph (136.79 km/h) | 155.42 mph (250.12 km/h) |
| 90 mph (144.84 km/h) | 164.56 mph (264.83 km/h) |
| 95 mph (152.89 km/h) | 173.7 mph (279.54 km/h) |
| 100 mph (160.93 km/h) | 182.84 mph (294.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1311 | 1523 | 1640 | 1713 | 1791 | 1847 | 1908 | 1981 | 2081 | 2181 | 2293 | 2382 | 2544 | 2723 | 2862 | 2951 | 3002 | 3186 | 3442 | 4000 |
Better Fuel Economy Factory Ratios Increased Power
