Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/40-18 | 225/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.46 (621.2) | 24.97 (634.3) | 0.52 (13.1) 2.1% |
| Width inches (mm) | 8.07 (205) | 8.86 (225) | 0.79 (20) 9.8% |
| Circum. inches (mm) | 76.83 (1951.56) | 78.45 (1992.71) | 1.62 (41.15) 2.1% |
| Sidewall Height inches (mm) | 3.23 (82) | 3.99 (101.25) | 0.76 (19.25) 23.5% |
| Revolutions per mile (km) | 824.65 (512.41) | 807.61 (501.83) | -17.03 (-10.58) -2.1% |
225/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.42 mph (32.87 km/h) |
| 25 mph (40.23 km/h) | 25.53 mph (41.08 km/h) |
| 30 mph (48.28 km/h) | 30.63 mph (49.3 km/h) |
| 35 mph (56.33 km/h) | 35.74 mph (57.51 km/h) |
| 40 mph (64.37 km/h) | 40.84 mph (65.73 km/h) |
| 45 mph (72.42 km/h) | 45.95 mph (73.95 km/h) |
| 50 mph (80.47 km/h) | 51.05 mph (82.16 km/h) |
| 55 mph (88.51 km/h) | 56.16 mph (90.38 km/h) |
| 60 mph (96.56 km/h) | 61.27 mph (98.6 km/h) |
| 65 mph (104.61 km/h) | 66.37 mph (106.81 km/h) |
| 70 mph (112.65 km/h) | 71.48 mph (115.03 km/h) |
| 75 mph (120.7 km/h) | 76.58 mph (123.25 km/h) |
| 80 mph (128.75 km/h) | 81.69 mph (131.46 km/h) |
| 85 mph (136.79 km/h) | 86.79 mph (139.68 km/h) |
| 90 mph (144.84 km/h) | 91.9 mph (147.9 km/h) |
| 95 mph (152.89 km/h) | 97 mph (156.11 km/h) |
| 100 mph (160.93 km/h) | 102.11 mph (164.33 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
