Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-15 | 225/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.97 (583.5) | 22.09 (561) | -0.89 (-22.5) -3.9% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 72.17 (1833.12) | 69.39 (1762.43) | -2.78 (-70.69) -3.9% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 3.54 (90) | -0.44 (-11.25) -11.1% |
| Revolutions per mile (km) | 877.93 (545.52) | 913.14 (567.4) | 35.21 (21.88) 4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.23 mph (30.95 km/h) |
| 25 mph (40.23 km/h) | 24.04 mph (38.68 km/h) |
| 30 mph (48.28 km/h) | 28.84 mph (46.42 km/h) |
| 35 mph (56.33 km/h) | 33.65 mph (54.16 km/h) |
| 40 mph (64.37 km/h) | 38.46 mph (61.89 km/h) |
| 45 mph (72.42 km/h) | 43.26 mph (69.63 km/h) |
| 50 mph (80.47 km/h) | 48.07 mph (77.36 km/h) |
| 55 mph (88.51 km/h) | 52.88 mph (85.1 km/h) |
| 60 mph (96.56 km/h) | 57.69 mph (92.84 km/h) |
| 65 mph (104.61 km/h) | 62.49 mph (100.57 km/h) |
| 70 mph (112.65 km/h) | 67.3 mph (108.31 km/h) |
| 75 mph (120.7 km/h) | 72.11 mph (116.05 km/h) |
| 80 mph (128.75 km/h) | 76.92 mph (123.78 km/h) |
| 85 mph (136.79 km/h) | 81.72 mph (131.52 km/h) |
| 90 mph (144.84 km/h) | 86.53 mph (139.26 km/h) |
| 95 mph (152.89 km/h) | 91.34 mph (146.99 km/h) |
| 100 mph (160.93 km/h) | 96.14 mph (154.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2324 | 2700 | 2907 | 3036 | 3174 | 3273 | 3382 | 3510 | 3688 | 3866 | 4064 | 4222 | 4509 | 4826 | 5073 | 5231 | 5320 | 5646 | 6101 | 7090 |
Better Fuel Economy Factory Ratios Increased Power
