Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 355/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 42.36 (1076) | 20.95 (532.2) 97.9% |
| Width inches (mm) | 3.15 (80) | 13.98 (355) | 10.83 (275) 343.8% |
| Circum. inches (mm) | 67.26 (1708.4) | 133.08 (3380.35) | 65.83 (1671.96) 97.9% |
| Sidewall Height inches (mm) | 2.2 (56) | 11.18 (284) | 8.98 (228) 407.1% |
| Revolutions per mile (km) | 942.02 (585.34) | 476.09 (295.83) | -465.93 (-289.52) -49.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 39.57 mph (63.69 km/h) |
| 25 mph (40.23 km/h) | 49.47 mph (79.61 km/h) |
| 30 mph (48.28 km/h) | 59.36 mph (95.53 km/h) |
| 35 mph (56.33 km/h) | 69.25 mph (111.45 km/h) |
| 40 mph (64.37 km/h) | 79.15 mph (127.37 km/h) |
| 45 mph (72.42 km/h) | 89.04 mph (143.3 km/h) |
| 50 mph (80.47 km/h) | 98.93 mph (159.22 km/h) |
| 55 mph (88.51 km/h) | 108.83 mph (175.14 km/h) |
| 60 mph (96.56 km/h) | 118.72 mph (191.06 km/h) |
| 65 mph (104.61 km/h) | 128.61 mph (206.98 km/h) |
| 70 mph (112.65 km/h) | 138.51 mph (222.91 km/h) |
| 75 mph (120.7 km/h) | 148.4 mph (238.83 km/h) |
| 80 mph (128.75 km/h) | 158.29 mph (254.75 km/h) |
| 85 mph (136.79 km/h) | 168.19 mph (270.67 km/h) |
| 90 mph (144.84 km/h) | 178.08 mph (286.59 km/h) |
| 95 mph (152.89 km/h) | 187.97 mph (302.51 km/h) |
| 100 mph (160.93 km/h) | 197.87 mph (318.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1212 | 1407 | 1516 | 1583 | 1655 | 1706 | 1763 | 1830 | 1923 | 2016 | 2119 | 2201 | 2351 | 2516 | 2645 | 2727 | 2774 | 2944 | 3181 | 3697 |
Better Fuel Economy Factory Ratios Increased Power
