Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-13 | 225/75-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.97 (532.7) | 26.29 (667.7) | 5.31 (135) 25.3% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 65.89 (1673.53) | 82.58 (2097.64) | 16.7 (424.12) 25.3% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 6.64 (168.75) | 2.66 (67.5) 66.7% |
| Revolutions per mile (km) | 961.65 (597.54) | 767.22 (476.72) | -194.43 (-120.81) -20.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.07 mph (40.34 km/h) |
| 25 mph (40.23 km/h) | 31.34 mph (50.43 km/h) |
| 30 mph (48.28 km/h) | 37.6 mph (60.52 km/h) |
| 35 mph (56.33 km/h) | 43.87 mph (70.6 km/h) |
| 40 mph (64.37 km/h) | 50.14 mph (80.69 km/h) |
| 45 mph (72.42 km/h) | 56.4 mph (90.77 km/h) |
| 50 mph (80.47 km/h) | 62.67 mph (100.86 km/h) |
| 55 mph (88.51 km/h) | 68.94 mph (110.95 km/h) |
| 60 mph (96.56 km/h) | 75.21 mph (121.03 km/h) |
| 65 mph (104.61 km/h) | 81.47 mph (131.12 km/h) |
| 70 mph (112.65 km/h) | 87.74 mph (141.2 km/h) |
| 75 mph (120.7 km/h) | 94.01 mph (151.29 km/h) |
| 80 mph (128.75 km/h) | 100.27 mph (161.38 km/h) |
| 85 mph (136.79 km/h) | 106.54 mph (171.46 km/h) |
| 90 mph (144.84 km/h) | 112.81 mph (181.55 km/h) |
| 95 mph (152.89 km/h) | 119.08 mph (191.63 km/h) |
| 100 mph (160.93 km/h) | 125.34 mph (201.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1952 | 2268 | 2443 | 2551 | 2667 | 2750 | 2841 | 2949 | 3099 | 3248 | 3415 | 3548 | 3789 | 4054 | 4262 | 4395 | 4470 | 4744 | 5126 | 5957 |
Better Fuel Economy Factory Ratios Increased Power
