Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-14 | 270/40-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.09 (535.6) | 30.5 (774.8) | 9.42 (239.2) 44.7% |
| Width inches (mm) | 8.86 (225) | 10.63 (270) | 1.77 (45) 20% |
| Circum. inches (mm) | 66.25 (1682.64) | 95.83 (2434.11) | 29.59 (751.47) 44.7% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.25 (108) | 0.71 (18) 20% |
| Revolutions per mile (km) | 956.44 (594.3) | 661.16 (410.83) | -295.28 (-183.48) -30.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.93 mph (46.56 km/h) |
| 25 mph (40.23 km/h) | 36.17 mph (58.2 km/h) |
| 30 mph (48.28 km/h) | 43.4 mph (69.84 km/h) |
| 35 mph (56.33 km/h) | 50.63 mph (81.48 km/h) |
| 40 mph (64.37 km/h) | 57.86 mph (93.12 km/h) |
| 45 mph (72.42 km/h) | 65.1 mph (104.76 km/h) |
| 50 mph (80.47 km/h) | 72.33 mph (116.4 km/h) |
| 55 mph (88.51 km/h) | 79.56 mph (128.04 km/h) |
| 60 mph (96.56 km/h) | 86.8 mph (139.69 km/h) |
| 65 mph (104.61 km/h) | 94.03 mph (151.33 km/h) |
| 70 mph (112.65 km/h) | 101.26 mph (162.97 km/h) |
| 75 mph (120.7 km/h) | 108.5 mph (174.61 km/h) |
| 80 mph (128.75 km/h) | 115.73 mph (186.25 km/h) |
| 85 mph (136.79 km/h) | 122.96 mph (197.89 km/h) |
| 90 mph (144.84 km/h) | 130.19 mph (209.53 km/h) |
| 95 mph (152.89 km/h) | 137.43 mph (221.17 km/h) |
| 100 mph (160.93 km/h) | 144.66 mph (232.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1683 | 1955 | 2105 | 2198 | 2298 | 2370 | 2449 | 2542 | 2671 | 2799 | 2943 | 3057 | 3265 | 3494 | 3673 | 3787 | 3852 | 4088 | 4418 | 5134 |
Better Fuel Economy Factory Ratios Increased Power
