Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 100/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 23.3 (591.8) | 1.89 (48) 8.8% |
| Width inches (mm) | 3.15 (80) | 3.94 (100) | 0.79 (20) 25% |
| Circum. inches (mm) | 67.26 (1708.4) | 73.2 (1859.19) | 5.94 (150.8) 8.8% |
| Sidewall Height inches (mm) | 2.2 (56) | 3.15 (80) | 0.94 (24) 42.9% |
| Revolutions per mile (km) | 942.02 (585.34) | 865.61 (537.87) | -76.41 (-47.48) -8.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.77 mph (35.03 km/h) |
| 25 mph (40.23 km/h) | 27.21 mph (43.79 km/h) |
| 30 mph (48.28 km/h) | 32.65 mph (52.54 km/h) |
| 35 mph (56.33 km/h) | 38.09 mph (61.3 km/h) |
| 40 mph (64.37 km/h) | 43.53 mph (70.06 km/h) |
| 45 mph (72.42 km/h) | 48.97 mph (78.81 km/h) |
| 50 mph (80.47 km/h) | 54.41 mph (87.57 km/h) |
| 55 mph (88.51 km/h) | 59.85 mph (96.33 km/h) |
| 60 mph (96.56 km/h) | 65.3 mph (105.08 km/h) |
| 65 mph (104.61 km/h) | 70.74 mph (113.84 km/h) |
| 70 mph (112.65 km/h) | 76.18 mph (122.6 km/h) |
| 75 mph (120.7 km/h) | 81.62 mph (131.36 km/h) |
| 80 mph (128.75 km/h) | 87.06 mph (140.11 km/h) |
| 85 mph (136.79 km/h) | 92.5 mph (148.87 km/h) |
| 90 mph (144.84 km/h) | 97.94 mph (157.63 km/h) |
| 95 mph (152.89 km/h) | 103.39 mph (166.38 km/h) |
| 100 mph (160.93 km/h) | 108.83 mph (175.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2203 | 2559 | 2756 | 2878 | 3009 | 3103 | 3206 | 3328 | 3496 | 3665 | 3853 | 4003 | 4274 | 4574 | 4809 | 4959 | 5043 | 5352 | 5784 | 6721 |
Better Fuel Economy Factory Ratios Increased Power
