Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/45-17 | 225/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.33 (643.3) | 26.09 (662.6) | 0.76 (19.3) 3% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 79.57 (2020.99) | 81.95 (2081.62) | 2.39 (60.63) 3% |
| Sidewall Height inches (mm) | 4.16 (105.75) | 3.54 (90) | -0.62 (-15.75) -14.9% |
| Revolutions per mile (km) | 796.32 (494.81) | 773.12 (480.39) | -23.19 (-14.41) -2.9% |
225/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.6 mph (33.15 km/h) |
| 25 mph (40.23 km/h) | 25.75 mph (41.44 km/h) |
| 30 mph (48.28 km/h) | 30.9 mph (49.73 km/h) |
| 35 mph (56.33 km/h) | 36.05 mph (58.02 km/h) |
| 40 mph (64.37 km/h) | 41.2 mph (66.31 km/h) |
| 45 mph (72.42 km/h) | 46.35 mph (74.59 km/h) |
| 50 mph (80.47 km/h) | 51.5 mph (82.88 km/h) |
| 55 mph (88.51 km/h) | 56.65 mph (91.17 km/h) |
| 60 mph (96.56 km/h) | 61.8 mph (99.46 km/h) |
| 65 mph (104.61 km/h) | 66.95 mph (107.75 km/h) |
| 70 mph (112.65 km/h) | 72.1 mph (116.03 km/h) |
| 75 mph (120.7 km/h) | 77.25 mph (124.32 km/h) |
| 80 mph (128.75 km/h) | 82.4 mph (132.61 km/h) |
| 85 mph (136.79 km/h) | 87.55 mph (140.9 km/h) |
| 90 mph (144.84 km/h) | 92.7 mph (149.19 km/h) |
| 95 mph (152.89 km/h) | 97.85 mph (157.47 km/h) |
| 100 mph (160.93 km/h) | 103 mph (165.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1967 | 2286 | 2461 | 2570 | 2687 | 2771 | 2863 | 2972 | 3123 | 3273 | 3441 | 3575 | 3818 | 4086 | 4295 | 4429 | 4504 | 4780 | 5166 | 6003 |
Better Fuel Economy Factory Ratios Increased Power
