Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-14 | 270/40-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.6) | 22.5 (571.6) | 1.42 (36) 6.7% |
| Width inches (mm) | 8.86 (225) | 10.63 (270) | 1.77 (45) 20% |
| Circum. inches (mm) | 66.25 (1682.64) | 70.7 (1795.73) | 4.45 (113.1) 6.7% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.25 (108) | 0.71 (18) 20% |
| Revolutions per mile (km) | 956.44 (594.3) | 896.2 (556.87) | -60.24 (-37.43) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.34 mph (34.35 km/h) |
| 25 mph (40.23 km/h) | 26.68 mph (42.94 km/h) |
| 30 mph (48.28 km/h) | 32.02 mph (51.53 km/h) |
| 35 mph (56.33 km/h) | 37.35 mph (60.11 km/h) |
| 40 mph (64.37 km/h) | 42.69 mph (68.7 km/h) |
| 45 mph (72.42 km/h) | 48.02 mph (77.29 km/h) |
| 50 mph (80.47 km/h) | 53.36 mph (85.88 km/h) |
| 55 mph (88.51 km/h) | 58.7 mph (94.46 km/h) |
| 60 mph (96.56 km/h) | 64.03 mph (103.05 km/h) |
| 65 mph (104.61 km/h) | 69.37 mph (111.64 km/h) |
| 70 mph (112.65 km/h) | 74.71 mph (120.23 km/h) |
| 75 mph (120.7 km/h) | 80.04 mph (128.81 km/h) |
| 80 mph (128.75 km/h) | 85.38 mph (137.4 km/h) |
| 85 mph (136.79 km/h) | 90.71 mph (145.99 km/h) |
| 90 mph (144.84 km/h) | 96.05 mph (154.58 km/h) |
| 95 mph (152.89 km/h) | 101.39 mph (163.16 km/h) |
| 100 mph (160.93 km/h) | 106.72 mph (171.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2281 | 2649 | 2853 | 2979 | 3115 | 3212 | 3319 | 3445 | 3620 | 3795 | 3989 | 4144 | 4425 | 4736 | 4979 | 5134 | 5221 | 5542 | 5988 | 6958 |
Better Fuel Economy Factory Ratios Increased Power
