Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/55-16 | 145/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.28 (565.9) | 20.14 (511.5) | -2.14 (-54.4) -9.6% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 69.99 (1777.83) | 63.26 (1606.92) | -6.73 (-170.9) -9.6% |
| Sidewall Height inches (mm) | 3.14 (79.75) | 2.57 (65.25) | -0.57 (-14.5) -18.2% |
| Revolutions per mile (km) | 905.23 (562.48) | 1001.51 (622.31) | 96.27 (59.82) 10.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.08 mph (29.09 km/h) |
| 25 mph (40.23 km/h) | 22.6 mph (36.37 km/h) |
| 30 mph (48.28 km/h) | 27.12 mph (43.64 km/h) |
| 35 mph (56.33 km/h) | 31.64 mph (50.91 km/h) |
| 40 mph (64.37 km/h) | 36.15 mph (58.19 km/h) |
| 45 mph (72.42 km/h) | 40.67 mph (65.46 km/h) |
| 50 mph (80.47 km/h) | 45.19 mph (72.73 km/h) |
| 55 mph (88.51 km/h) | 49.71 mph (80.01 km/h) |
| 60 mph (96.56 km/h) | 54.23 mph (87.28 km/h) |
| 65 mph (104.61 km/h) | 58.75 mph (94.55 km/h) |
| 70 mph (112.65 km/h) | 63.27 mph (101.82 km/h) |
| 75 mph (120.7 km/h) | 67.79 mph (109.1 km/h) |
| 80 mph (128.75 km/h) | 72.31 mph (116.37 km/h) |
| 85 mph (136.79 km/h) | 76.83 mph (123.64 km/h) |
| 90 mph (144.84 km/h) | 81.35 mph (130.92 km/h) |
| 95 mph (152.89 km/h) | 85.87 mph (138.19 km/h) |
| 100 mph (160.93 km/h) | 90.39 mph (145.46 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
