Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/50-17 | 80/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.72 (551.8) | 22.04 (559.8) | 0.31 (8) 1.4% |
| Width inches (mm) | 4.72 (120) | 3.15 (80) | -1.57 (-40) -33.3% |
| Circum. inches (mm) | 68.25 (1733.53) | 69.24 (1758.66) | 0.99 (25.13) 1.4% |
| Sidewall Height inches (mm) | 2.36 (60) | 2.52 (64) | 0.16 (4) 6.7% |
| Revolutions per mile (km) | 928.36 (576.86) | 915.09 (568.61) | -13.27 (-8.24) -1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.29 mph (32.65 km/h) |
| 25 mph (40.23 km/h) | 25.36 mph (40.82 km/h) |
| 30 mph (48.28 km/h) | 30.43 mph (48.98 km/h) |
| 35 mph (56.33 km/h) | 35.51 mph (57.14 km/h) |
| 40 mph (64.37 km/h) | 40.58 mph (65.31 km/h) |
| 45 mph (72.42 km/h) | 45.65 mph (73.47 km/h) |
| 50 mph (80.47 km/h) | 50.72 mph (81.63 km/h) |
| 55 mph (88.51 km/h) | 55.8 mph (89.8 km/h) |
| 60 mph (96.56 km/h) | 60.87 mph (97.96 km/h) |
| 65 mph (104.61 km/h) | 65.94 mph (106.12 km/h) |
| 70 mph (112.65 km/h) | 71.01 mph (114.29 km/h) |
| 75 mph (120.7 km/h) | 76.09 mph (122.45 km/h) |
| 80 mph (128.75 km/h) | 81.16 mph (130.61 km/h) |
| 85 mph (136.79 km/h) | 86.23 mph (138.78 km/h) |
| 90 mph (144.84 km/h) | 91.3 mph (146.94 km/h) |
| 95 mph (152.89 km/h) | 96.38 mph (155.1 km/h) |
| 100 mph (160.93 km/h) | 101.45 mph (163.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2329 | 2705 | 2913 | 3042 | 3181 | 3280 | 3389 | 3518 | 3696 | 3875 | 4073 | 4231 | 4519 | 4836 | 5084 | 5242 | 5331 | 5658 | 6114 | 7105 |
Better Fuel Economy Factory Ratios Increased Power
