Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-15 | 145/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.42 (569.5) | 20.14 (511.5) | -2.28 (-58) -10.2% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 70.44 (1789.14) | 63.26 (1606.92) | -7.17 (-182.21) -10.2% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 2.57 (65.25) | -1.14 (-29) -30.8% |
| Revolutions per mile (km) | 899.51 (558.93) | 1001.51 (622.31) | 102 (63.38) 11.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.96 mph (28.91 km/h) |
| 25 mph (40.23 km/h) | 22.45 mph (36.14 km/h) |
| 30 mph (48.28 km/h) | 26.94 mph (43.36 km/h) |
| 35 mph (56.33 km/h) | 31.44 mph (50.59 km/h) |
| 40 mph (64.37 km/h) | 35.93 mph (57.82 km/h) |
| 45 mph (72.42 km/h) | 40.42 mph (65.05 km/h) |
| 50 mph (80.47 km/h) | 44.91 mph (72.27 km/h) |
| 55 mph (88.51 km/h) | 49.4 mph (79.5 km/h) |
| 60 mph (96.56 km/h) | 53.89 mph (86.73 km/h) |
| 65 mph (104.61 km/h) | 58.38 mph (93.95 km/h) |
| 70 mph (112.65 km/h) | 62.87 mph (101.18 km/h) |
| 75 mph (120.7 km/h) | 67.36 mph (108.41 km/h) |
| 80 mph (128.75 km/h) | 71.85 mph (115.64 km/h) |
| 85 mph (136.79 km/h) | 76.34 mph (122.86 km/h) |
| 90 mph (144.84 km/h) | 80.83 mph (130.09 km/h) |
| 95 mph (152.89 km/h) | 85.32 mph (137.32 km/h) |
| 100 mph (160.93 km/h) | 89.82 mph (144.54 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
