Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 385/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 39.74 (1009.3) | 18.33 (465.5) 85.6% |
| Width inches (mm) | 3.15 (80) | 15.16 (385) | 12.01 (305) 381.3% |
| Circum. inches (mm) | 67.26 (1708.4) | 124.84 (3170.81) | 57.58 (1462.41) 85.6% |
| Sidewall Height inches (mm) | 2.2 (56) | 11.37 (288.75) | 9.16 (232.75) 415.6% |
| Revolutions per mile (km) | 942.02 (585.34) | 507.55 (315.38) | -434.47 (-269.97) -46.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 37.12 mph (59.74 km/h) |
| 25 mph (40.23 km/h) | 46.4 mph (74.67 km/h) |
| 30 mph (48.28 km/h) | 55.68 mph (89.61 km/h) |
| 35 mph (56.33 km/h) | 64.96 mph (104.54 km/h) |
| 40 mph (64.37 km/h) | 74.24 mph (119.48 km/h) |
| 45 mph (72.42 km/h) | 83.52 mph (134.41 km/h) |
| 50 mph (80.47 km/h) | 92.8 mph (149.35 km/h) |
| 55 mph (88.51 km/h) | 102.08 mph (164.28 km/h) |
| 60 mph (96.56 km/h) | 111.36 mph (179.22 km/h) |
| 65 mph (104.61 km/h) | 120.64 mph (194.15 km/h) |
| 70 mph (112.65 km/h) | 129.92 mph (209.09 km/h) |
| 75 mph (120.7 km/h) | 139.2 mph (224.02 km/h) |
| 80 mph (128.75 km/h) | 148.48 mph (238.96 km/h) |
| 85 mph (136.79 km/h) | 157.76 mph (253.89 km/h) |
| 90 mph (144.84 km/h) | 167.04 mph (268.83 km/h) |
| 95 mph (152.89 km/h) | 176.32 mph (283.76 km/h) |
| 100 mph (160.93 km/h) | 185.6 mph (298.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1292 | 1500 | 1616 | 1687 | 1764 | 1819 | 1880 | 1951 | 2050 | 2149 | 2259 | 2347 | 2506 | 2682 | 2820 | 2908 | 2957 | 3138 | 3391 | 3941 |
Better Fuel Economy Factory Ratios Increased Power
