Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/45-15 | 155/78-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.26 (565.5) | 22.52 (572) | 0.26 (6.5) 1.1% |
| Width inches (mm) | 8.07 (205) | 6.1 (155) | -1.97 (-50) -24.4% |
| Circum. inches (mm) | 69.94 (1776.57) | 70.75 (1796.99) | 0.8 (20.42) 1.1% |
| Sidewall Height inches (mm) | 3.63 (92.25) | 4.76 (120.9) | 1.13 (28.65) 31.1% |
| Revolutions per mile (km) | 905.87 (562.88) | 895.58 (556.48) | -10.29 (-6.4) -1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.23 mph (32.56 km/h) |
| 25 mph (40.23 km/h) | 25.29 mph (40.7 km/h) |
| 30 mph (48.28 km/h) | 30.34 mph (48.84 km/h) |
| 35 mph (56.33 km/h) | 35.4 mph (56.97 km/h) |
| 40 mph (64.37 km/h) | 40.46 mph (65.11 km/h) |
| 45 mph (72.42 km/h) | 45.52 mph (73.25 km/h) |
| 50 mph (80.47 km/h) | 50.57 mph (81.39 km/h) |
| 55 mph (88.51 km/h) | 55.63 mph (89.53 km/h) |
| 60 mph (96.56 km/h) | 60.69 mph (97.67 km/h) |
| 65 mph (104.61 km/h) | 65.75 mph (105.81 km/h) |
| 70 mph (112.65 km/h) | 70.8 mph (113.95 km/h) |
| 75 mph (120.7 km/h) | 75.86 mph (122.09 km/h) |
| 80 mph (128.75 km/h) | 80.92 mph (130.23 km/h) |
| 85 mph (136.79 km/h) | 85.98 mph (138.37 km/h) |
| 90 mph (144.84 km/h) | 91.03 mph (146.51 km/h) |
| 95 mph (152.89 km/h) | 96.09 mph (154.65 km/h) |
| 100 mph (160.93 km/h) | 101.15 mph (162.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2279 | 2648 | 2851 | 2977 | 3113 | 3210 | 3317 | 3443 | 3617 | 3792 | 3986 | 4141 | 4422 | 4733 | 4975 | 5130 | 5218 | 5538 | 5984 | 6954 |
Better Fuel Economy Factory Ratios Increased Power
