Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-17 | 305/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.04 (661.3) | 27.81 (706.3) | 1.77 (45) 6.8% |
| Width inches (mm) | 10.04 (255) | 12.01 (305) | 1.97 (50) 19.6% |
| Circum. inches (mm) | 81.79 (2077.54) | 87.36 (2218.91) | 5.57 (141.37) 6.8% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 5.4 (137.25) | 0.89 (22.5) 19.6% |
| Revolutions per mile (km) | 774.64 (481.34) | 725.29 (450.67) | -49.35 (-30.67) -6.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.36 mph (34.38 km/h) |
| 25 mph (40.23 km/h) | 26.7 mph (42.97 km/h) |
| 30 mph (48.28 km/h) | 32.04 mph (51.57 km/h) |
| 35 mph (56.33 km/h) | 37.38 mph (60.16 km/h) |
| 40 mph (64.37 km/h) | 42.72 mph (68.75 km/h) |
| 45 mph (72.42 km/h) | 48.06 mph (77.35 km/h) |
| 50 mph (80.47 km/h) | 53.4 mph (85.94 km/h) |
| 55 mph (88.51 km/h) | 58.74 mph (94.54 km/h) |
| 60 mph (96.56 km/h) | 64.08 mph (103.13 km/h) |
| 65 mph (104.61 km/h) | 69.42 mph (111.73 km/h) |
| 70 mph (112.65 km/h) | 74.76 mph (120.32 km/h) |
| 75 mph (120.7 km/h) | 80.1 mph (128.91 km/h) |
| 80 mph (128.75 km/h) | 85.44 mph (137.51 km/h) |
| 85 mph (136.79 km/h) | 90.78 mph (146.1 km/h) |
| 90 mph (144.84 km/h) | 96.12 mph (154.7 km/h) |
| 95 mph (152.89 km/h) | 101.46 mph (163.29 km/h) |
| 100 mph (160.93 km/h) | 106.8 mph (171.89 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
