Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-17 | 305/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.91 (734.3) | 27.81 (706.3) | -1.1 (-28) -3.8% |
| Width inches (mm) | 10.83 (275) | 12.01 (305) | 1.18 (30) 10.9% |
| Circum. inches (mm) | 90.82 (2306.87) | 87.36 (2218.91) | -3.46 (-87.96) -3.8% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 5.4 (137.25) | -0.55 (-14) -9.3% |
| Revolutions per mile (km) | 697.63 (433.49) | 725.29 (450.67) | 27.66 (17.18) 4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.24 mph (30.96 km/h) |
| 25 mph (40.23 km/h) | 24.05 mph (38.7 km/h) |
| 30 mph (48.28 km/h) | 28.86 mph (46.44 km/h) |
| 35 mph (56.33 km/h) | 33.67 mph (54.18 km/h) |
| 40 mph (64.37 km/h) | 38.47 mph (61.92 km/h) |
| 45 mph (72.42 km/h) | 43.28 mph (69.66 km/h) |
| 50 mph (80.47 km/h) | 48.09 mph (77.4 km/h) |
| 55 mph (88.51 km/h) | 52.9 mph (85.14 km/h) |
| 60 mph (96.56 km/h) | 57.71 mph (92.88 km/h) |
| 65 mph (104.61 km/h) | 62.52 mph (100.62 km/h) |
| 70 mph (112.65 km/h) | 67.33 mph (108.36 km/h) |
| 75 mph (120.7 km/h) | 72.14 mph (116.1 km/h) |
| 80 mph (128.75 km/h) | 76.95 mph (123.84 km/h) |
| 85 mph (136.79 km/h) | 81.76 mph (131.58 km/h) |
| 90 mph (144.84 km/h) | 86.57 mph (139.32 km/h) |
| 95 mph (152.89 km/h) | 91.38 mph (147.06 km/h) |
| 100 mph (160.93 km/h) | 96.19 mph (154.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1846 | 2144 | 2309 | 2411 | 2521 | 2600 | 2686 | 2788 | 2930 | 3071 | 3228 | 3354 | 3581 | 3833 | 4029 | 4155 | 4226 | 4485 | 4846 | 5631 |
Better Fuel Economy Factory Ratios Increased Power
