Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-13 | 285/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.97 (532.7) | 25.1 (637.5) | 4.13 (104.8) 19.7% |
| Width inches (mm) | 8.86 (225) | 11.22 (285) | 2.36 (60) 26.7% |
| Circum. inches (mm) | 65.89 (1673.53) | 78.85 (2002.77) | 12.96 (329.24) 19.7% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 5.05 (128.25) | 1.06 (27) 26.7% |
| Revolutions per mile (km) | 961.65 (597.54) | 803.56 (499.31) | -158.09 (-98.23) -16.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.93 mph (38.52 km/h) |
| 25 mph (40.23 km/h) | 29.92 mph (48.15 km/h) |
| 30 mph (48.28 km/h) | 35.9 mph (57.78 km/h) |
| 35 mph (56.33 km/h) | 41.89 mph (67.41 km/h) |
| 40 mph (64.37 km/h) | 47.87 mph (77.04 km/h) |
| 45 mph (72.42 km/h) | 53.85 mph (86.67 km/h) |
| 50 mph (80.47 km/h) | 59.84 mph (96.3 km/h) |
| 55 mph (88.51 km/h) | 65.82 mph (105.93 km/h) |
| 60 mph (96.56 km/h) | 71.8 mph (115.56 km/h) |
| 65 mph (104.61 km/h) | 77.79 mph (125.19 km/h) |
| 70 mph (112.65 km/h) | 83.77 mph (134.82 km/h) |
| 75 mph (120.7 km/h) | 89.76 mph (144.45 km/h) |
| 80 mph (128.75 km/h) | 95.74 mph (154.08 km/h) |
| 85 mph (136.79 km/h) | 101.72 mph (163.71 km/h) |
| 90 mph (144.84 km/h) | 107.71 mph (173.34 km/h) |
| 95 mph (152.89 km/h) | 113.69 mph (182.97 km/h) |
| 100 mph (160.93 km/h) | 119.67 mph (192.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2045 | 2376 | 2558 | 2671 | 2793 | 2880 | 2976 | 3089 | 3246 | 3402 | 3576 | 3716 | 3968 | 4246 | 4464 | 4603 | 4682 | 4969 | 5369 | 6239 |
Better Fuel Economy Factory Ratios Increased Power
