Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 145/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 23.13 (587.6) | 1.71 (43.5) 8% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 67.3 (1709.34) | 72.68 (1846) | 5.38 (136.66) 8% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.57 (116) | 0.86 (21.75) 23.1% |
| Revolutions per mile (km) | 941.5 (585.02) | 871.8 (541.71) | -69.7 (-43.31) -7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.6 mph (34.76 km/h) |
| 25 mph (40.23 km/h) | 27 mph (43.45 km/h) |
| 30 mph (48.28 km/h) | 32.4 mph (52.14 km/h) |
| 35 mph (56.33 km/h) | 37.8 mph (60.83 km/h) |
| 40 mph (64.37 km/h) | 43.2 mph (69.52 km/h) |
| 45 mph (72.42 km/h) | 48.6 mph (78.21 km/h) |
| 50 mph (80.47 km/h) | 54 mph (86.9 km/h) |
| 55 mph (88.51 km/h) | 59.4 mph (95.59 km/h) |
| 60 mph (96.56 km/h) | 64.8 mph (104.28 km/h) |
| 65 mph (104.61 km/h) | 70.2 mph (112.97 km/h) |
| 70 mph (112.65 km/h) | 75.6 mph (121.66 km/h) |
| 75 mph (120.7 km/h) | 81 mph (130.35 km/h) |
| 80 mph (128.75 km/h) | 86.4 mph (139.04 km/h) |
| 85 mph (136.79 km/h) | 91.8 mph (147.73 km/h) |
| 90 mph (144.84 km/h) | 97.2 mph (156.42 km/h) |
| 95 mph (152.89 km/h) | 102.6 mph (165.11 km/h) |
| 100 mph (160.93 km/h) | 107.99 mph (173.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2219 | 2577 | 2776 | 2898 | 3030 | 3125 | 3229 | 3351 | 3521 | 3691 | 3880 | 4031 | 4305 | 4607 | 4843 | 4994 | 5079 | 5391 | 5825 | 6769 |
Better Fuel Economy Factory Ratios Increased Power
