Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/50-17 | 255/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.83 (706.8) | 26.04 (661.3) | -1.79 (-45.5) -6.4% |
| Width inches (mm) | 10.83 (275) | 10.04 (255) | -0.79 (-20) -7.3% |
| Circum. inches (mm) | 87.42 (2220.48) | 81.79 (2077.54) | -5.63 (-142.94) -6.4% |
| Sidewall Height inches (mm) | 5.41 (137.5) | 4.52 (114.75) | -0.9 (-22.75) -16.5% |
| Revolutions per mile (km) | 724.77 (450.35) | 774.64 (481.34) | 49.87 (30.99) 6.9% |
255/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.71 mph (30.11 km/h) |
| 25 mph (40.23 km/h) | 23.39 mph (37.64 km/h) |
| 30 mph (48.28 km/h) | 28.07 mph (45.17 km/h) |
| 35 mph (56.33 km/h) | 32.75 mph (52.7 km/h) |
| 40 mph (64.37 km/h) | 37.43 mph (60.23 km/h) |
| 45 mph (72.42 km/h) | 42.1 mph (67.76 km/h) |
| 50 mph (80.47 km/h) | 46.78 mph (75.29 km/h) |
| 55 mph (88.51 km/h) | 51.46 mph (82.82 km/h) |
| 60 mph (96.56 km/h) | 56.14 mph (90.34 km/h) |
| 65 mph (104.61 km/h) | 60.82 mph (97.87 km/h) |
| 70 mph (112.65 km/h) | 65.49 mph (105.4 km/h) |
| 75 mph (120.7 km/h) | 70.17 mph (112.93 km/h) |
| 80 mph (128.75 km/h) | 74.85 mph (120.46 km/h) |
| 85 mph (136.79 km/h) | 79.53 mph (127.99 km/h) |
| 90 mph (144.84 km/h) | 84.21 mph (135.52 km/h) |
| 95 mph (152.89 km/h) | 88.88 mph (143.05 km/h) |
| 100 mph (160.93 km/h) | 93.56 mph (150.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971 | 2290 | 2466 | 2575 | 2693 | 2777 | 2869 | 2978 | 3129 | 3280 | 3448 | 3582 | 3825 | 4094 | 4303 | 4438 | 4513 | 4790 | 5176 | 6015 |
Better Fuel Economy Factory Ratios Increased Power
