Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/45-17 | 305/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.52 (724.3) | 27.81 (706.3) | -0.71 (-18) -2.5% |
| Width inches (mm) | 12.8 (325) | 12.01 (305) | -0.79 (-20) -6.2% |
| Circum. inches (mm) | 89.58 (2275.46) | 87.36 (2218.91) | -2.23 (-56.55) -2.5% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 5.4 (137.25) | -0.35 (-9) -6.2% |
| Revolutions per mile (km) | 707.26 (439.47) | 725.29 (450.67) | 18.02 (11.2) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.5 mph (31.39 km/h) |
| 25 mph (40.23 km/h) | 24.38 mph (39.23 km/h) |
| 30 mph (48.28 km/h) | 29.25 mph (47.08 km/h) |
| 35 mph (56.33 km/h) | 34.13 mph (54.93 km/h) |
| 40 mph (64.37 km/h) | 39.01 mph (62.77 km/h) |
| 45 mph (72.42 km/h) | 43.88 mph (70.62 km/h) |
| 50 mph (80.47 km/h) | 48.76 mph (78.47 km/h) |
| 55 mph (88.51 km/h) | 53.63 mph (86.31 km/h) |
| 60 mph (96.56 km/h) | 58.51 mph (94.16 km/h) |
| 65 mph (104.61 km/h) | 63.38 mph (102.01 km/h) |
| 70 mph (112.65 km/h) | 68.26 mph (109.85 km/h) |
| 75 mph (120.7 km/h) | 73.14 mph (117.7 km/h) |
| 80 mph (128.75 km/h) | 78.01 mph (125.55 km/h) |
| 85 mph (136.79 km/h) | 82.89 mph (133.39 km/h) |
| 90 mph (144.84 km/h) | 87.76 mph (141.24 km/h) |
| 95 mph (152.89 km/h) | 92.64 mph (149.09 km/h) |
| 100 mph (160.93 km/h) | 97.51 mph (156.94 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
