Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-15 | 145/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.42 (569.5) | 24.13 (613) | 1.71 (43.5) 7.6% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 70.44 (1789.14) | 75.82 (1925.8) | 5.38 (136.66) 7.6% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.57 (116) | 0.86 (21.75) 23.1% |
| Revolutions per mile (km) | 899.51 (558.93) | 835.68 (519.26) | -63.83 (-39.66) -7.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.53 mph (34.65 km/h) |
| 25 mph (40.23 km/h) | 26.91 mph (43.31 km/h) |
| 30 mph (48.28 km/h) | 32.29 mph (51.97 km/h) |
| 35 mph (56.33 km/h) | 37.67 mph (60.63 km/h) |
| 40 mph (64.37 km/h) | 43.06 mph (69.29 km/h) |
| 45 mph (72.42 km/h) | 48.44 mph (77.95 km/h) |
| 50 mph (80.47 km/h) | 53.82 mph (86.61 km/h) |
| 55 mph (88.51 km/h) | 59.2 mph (95.28 km/h) |
| 60 mph (96.56 km/h) | 64.58 mph (103.94 km/h) |
| 65 mph (104.61 km/h) | 69.96 mph (112.6 km/h) |
| 70 mph (112.65 km/h) | 75.35 mph (121.26 km/h) |
| 75 mph (120.7 km/h) | 80.73 mph (129.92 km/h) |
| 80 mph (128.75 km/h) | 86.11 mph (138.58 km/h) |
| 85 mph (136.79 km/h) | 91.49 mph (147.24 km/h) |
| 90 mph (144.84 km/h) | 96.87 mph (155.9 km/h) |
| 95 mph (152.89 km/h) | 102.26 mph (164.57 km/h) |
| 100 mph (160.93 km/h) | 107.64 mph (173.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2127 | 2471 | 2661 | 2778 | 2905 | 2995 | 3095 | 3213 | 3375 | 3538 | 3719 | 3864 | 4127 | 4416 | 4642 | 4787 | 4869 | 5167 | 5584 | 6489 |
Better Fuel Economy Factory Ratios Increased Power
