Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-18 | 205/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.09 (637.2) | 25.07 (636.8) | -0.02 (-0.4) -0.1% |
| Width inches (mm) | 8.86 (225) | 8.07 (205) | -0.79 (-20) -8.9% |
| Circum. inches (mm) | 78.81 (2001.82) | 78.76 (2000.57) | -0.05 (-1.26) -0.1% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.04 (102.5) | 0.49 (12.5) 13.9% |
| Revolutions per mile (km) | 803.94 (499.54) | 804.44 (499.86) | 0.5 (0.31) 0.1% |
205/50-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.99 mph (32.17 km/h) |
| 25 mph (40.23 km/h) | 24.98 mph (40.21 km/h) |
| 30 mph (48.28 km/h) | 29.98 mph (48.25 km/h) |
| 35 mph (56.33 km/h) | 34.98 mph (56.29 km/h) |
| 40 mph (64.37 km/h) | 39.97 mph (64.33 km/h) |
| 45 mph (72.42 km/h) | 44.97 mph (72.38 km/h) |
| 50 mph (80.47 km/h) | 49.97 mph (80.42 km/h) |
| 55 mph (88.51 km/h) | 54.97 mph (88.46 km/h) |
| 60 mph (96.56 km/h) | 59.96 mph (96.5 km/h) |
| 65 mph (104.61 km/h) | 64.96 mph (104.54 km/h) |
| 70 mph (112.65 km/h) | 69.96 mph (112.58 km/h) |
| 75 mph (120.7 km/h) | 74.95 mph (120.63 km/h) |
| 80 mph (128.75 km/h) | 79.95 mph (128.67 km/h) |
| 85 mph (136.79 km/h) | 84.95 mph (136.71 km/h) |
| 90 mph (144.84 km/h) | 89.94 mph (144.75 km/h) |
| 95 mph (152.89 km/h) | 94.94 mph (152.79 km/h) |
| 100 mph (160.93 km/h) | 99.94 mph (160.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2047 | 2378 | 2561 | 2674 | 2796 | 2883 | 2979 | 3093 | 3249 | 3406 | 3580 | 3720 | 3972 | 4251 | 4469 | 4608 | 4687 | 4974 | 5375 | 6246 |
Better Fuel Economy Factory Ratios Increased Power
