Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-18 | 225/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.09 (637.2) | 24.97 (634.3) | -0.11 (-2.9) -0.5% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 78.81 (2001.82) | 78.45 (1992.71) | -0.36 (-9.11) -0.5% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.99 (101.25) | 0.44 (11.25) 12.5% |
| Revolutions per mile (km) | 803.94 (499.54) | 807.61 (501.83) | 3.68 (2.28) 0.5% |
225/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.04 km/h) |
| 25 mph (40.23 km/h) | 24.89 mph (40.05 km/h) |
| 30 mph (48.28 km/h) | 29.86 mph (48.06 km/h) |
| 35 mph (56.33 km/h) | 34.84 mph (56.07 km/h) |
| 40 mph (64.37 km/h) | 39.82 mph (64.08 km/h) |
| 45 mph (72.42 km/h) | 44.8 mph (72.09 km/h) |
| 50 mph (80.47 km/h) | 49.77 mph (80.1 km/h) |
| 55 mph (88.51 km/h) | 54.75 mph (88.11 km/h) |
| 60 mph (96.56 km/h) | 59.73 mph (96.12 km/h) |
| 65 mph (104.61 km/h) | 64.7 mph (104.13 km/h) |
| 70 mph (112.65 km/h) | 69.68 mph (112.14 km/h) |
| 75 mph (120.7 km/h) | 74.66 mph (120.15 km/h) |
| 80 mph (128.75 km/h) | 79.64 mph (128.16 km/h) |
| 85 mph (136.79 km/h) | 84.61 mph (136.17 km/h) |
| 90 mph (144.84 km/h) | 89.59 mph (144.18 km/h) |
| 95 mph (152.89 km/h) | 94.57 mph (152.19 km/h) |
| 100 mph (160.93 km/h) | 99.54 mph (160.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2055 | 2388 | 2571 | 2685 | 2807 | 2895 | 2991 | 3105 | 3262 | 3420 | 3594 | 3734 | 3988 | 4268 | 4487 | 4626 | 4705 | 4994 | 5396 | 6271 |
Better Fuel Economy Factory Ratios Increased Power
