Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/40-18 | 225/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.72 (653.2) | 25.86 (656.8) | 0.14 (3.6) 0.6% |
| Width inches (mm) | 9.65 (245) | 8.86 (225) | -0.79 (-20) -8.2% |
| Circum. inches (mm) | 80.79 (2052.09) | 81.24 (2063.4) | 0.45 (11.31) 0.6% |
| Sidewall Height inches (mm) | 3.86 (98) | 4.43 (112.5) | 0.57 (14.5) 14.8% |
| Revolutions per mile (km) | 784.25 (487.31) | 779.95 (484.64) | -4.3 (-2.67) -0.5% |
225/50-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.11 mph (32.36 km/h) |
| 25 mph (40.23 km/h) | 25.14 mph (40.46 km/h) |
| 30 mph (48.28 km/h) | 30.17 mph (48.55 km/h) |
| 35 mph (56.33 km/h) | 35.19 mph (56.64 km/h) |
| 40 mph (64.37 km/h) | 40.22 mph (64.73 km/h) |
| 45 mph (72.42 km/h) | 45.25 mph (72.82 km/h) |
| 50 mph (80.47 km/h) | 50.28 mph (80.91 km/h) |
| 55 mph (88.51 km/h) | 55.3 mph (89 km/h) |
| 60 mph (96.56 km/h) | 60.33 mph (97.09 km/h) |
| 65 mph (104.61 km/h) | 65.36 mph (105.18 km/h) |
| 70 mph (112.65 km/h) | 70.39 mph (113.28 km/h) |
| 75 mph (120.7 km/h) | 75.41 mph (121.37 km/h) |
| 80 mph (128.75 km/h) | 80.44 mph (129.46 km/h) |
| 85 mph (136.79 km/h) | 85.47 mph (137.55 km/h) |
| 90 mph (144.84 km/h) | 90.5 mph (145.64 km/h) |
| 95 mph (152.89 km/h) | 95.52 mph (153.73 km/h) |
| 100 mph (160.93 km/h) | 100.55 mph (161.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 2306 | 2483 | 2593 | 2711 | 2796 | 2889 | 2998 | 3150 | 3302 | 3471 | 3606 | 3851 | 4122 | 4333 | 4468 | 4544 | 4823 | 5211 | 6056 |
Better Fuel Economy Factory Ratios Increased Power
