Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-10 | 178/79-10 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 17.09 (434) | 21.07 (535.24) | 3.99 (101.24) 23.3% |
| Width inches (mm) | 8.86 (225) | 7.01 (178) | -1.85 (-47) -20.9% |
| Circum. inches (mm) | 53.68 (1363.45) | 66.2 (1681.51) | 12.52 (318.05) 23.3% |
| Sidewall Height inches (mm) | 3.54 (90) | 5.54 (140.62) | 1.99 (50.62) 56.2% |
| Revolutions per mile (km) | 1180.35 (733.43) | 957.08 (594.7) | -223.26 (-138.73) -18.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.67 mph (39.7 km/h) |
| 25 mph (40.23 km/h) | 30.83 mph (49.62 km/h) |
| 30 mph (48.28 km/h) | 37 mph (59.54 km/h) |
| 35 mph (56.33 km/h) | 43.16 mph (69.47 km/h) |
| 40 mph (64.37 km/h) | 49.33 mph (79.39 km/h) |
| 45 mph (72.42 km/h) | 55.5 mph (89.31 km/h) |
| 50 mph (80.47 km/h) | 61.66 mph (99.24 km/h) |
| 55 mph (88.51 km/h) | 67.83 mph (109.16 km/h) |
| 60 mph (96.56 km/h) | 74 mph (119.09 km/h) |
| 65 mph (104.61 km/h) | 80.16 mph (129.01 km/h) |
| 70 mph (112.65 km/h) | 86.33 mph (138.93 km/h) |
| 75 mph (120.7 km/h) | 92.5 mph (148.86 km/h) |
| 80 mph (128.75 km/h) | 98.66 mph (158.78 km/h) |
| 85 mph (136.79 km/h) | 104.83 mph (168.7 km/h) |
| 90 mph (144.84 km/h) | 110.99 mph (178.63 km/h) |
| 95 mph (152.89 km/h) | 117.16 mph (188.55 km/h) |
| 100 mph (160.93 km/h) | 123.33 mph (198.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
