Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/45-15 | 185/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.26 (565.5) | 21.56 (547.5) | -0.71 (-18) -3.2% |
| Width inches (mm) | 8.07 (205) | 7.28 (185) | -0.79 (-20) -9.8% |
| Circum. inches (mm) | 69.94 (1776.57) | 67.72 (1720.02) | -2.23 (-56.55) -3.2% |
| Sidewall Height inches (mm) | 3.63 (92.25) | 3.28 (83.25) | -0.35 (-9) -9.8% |
| Revolutions per mile (km) | 905.87 (562.88) | 935.65 (581.39) | 29.78 (18.51) 3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.36 mph (31.16 km/h) |
| 25 mph (40.23 km/h) | 24.2 mph (38.95 km/h) |
| 30 mph (48.28 km/h) | 29.05 mph (46.74 km/h) |
| 35 mph (56.33 km/h) | 33.89 mph (54.53 km/h) |
| 40 mph (64.37 km/h) | 38.73 mph (62.32 km/h) |
| 45 mph (72.42 km/h) | 43.57 mph (70.12 km/h) |
| 50 mph (80.47 km/h) | 48.41 mph (77.91 km/h) |
| 55 mph (88.51 km/h) | 53.25 mph (85.7 km/h) |
| 60 mph (96.56 km/h) | 58.09 mph (93.49 km/h) |
| 65 mph (104.61 km/h) | 62.93 mph (101.28 km/h) |
| 70 mph (112.65 km/h) | 67.77 mph (109.07 km/h) |
| 75 mph (120.7 km/h) | 72.61 mph (116.86 km/h) |
| 80 mph (128.75 km/h) | 77.45 mph (124.65 km/h) |
| 85 mph (136.79 km/h) | 82.29 mph (132.44 km/h) |
| 90 mph (144.84 km/h) | 87.14 mph (140.23 km/h) |
| 95 mph (152.89 km/h) | 91.98 mph (148.02 km/h) |
| 100 mph (160.93 km/h) | 96.82 mph (155.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
