Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-12 | 155/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.13 (536.8) | 21.93 (557.1) | 0.8 (20.3) 3.8% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 66.39 (1686.41) | 68.9 (1750.18) | 2.51 (63.77) 3.8% |
| Sidewall Height inches (mm) | 4.57 (116) | 3.97 (100.75) | -0.6 (-15.25) -13.1% |
| Revolutions per mile (km) | 954.3 (592.98) | 919.53 (571.37) | -34.77 (-21.61) -3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.76 mph (33.4 km/h) |
| 25 mph (40.23 km/h) | 25.95 mph (41.76 km/h) |
| 30 mph (48.28 km/h) | 31.13 mph (50.11 km/h) |
| 35 mph (56.33 km/h) | 36.32 mph (58.46 km/h) |
| 40 mph (64.37 km/h) | 41.51 mph (66.81 km/h) |
| 45 mph (72.42 km/h) | 46.7 mph (75.16 km/h) |
| 50 mph (80.47 km/h) | 51.89 mph (83.51 km/h) |
| 55 mph (88.51 km/h) | 57.08 mph (91.86 km/h) |
| 60 mph (96.56 km/h) | 62.27 mph (100.21 km/h) |
| 65 mph (104.61 km/h) | 67.46 mph (108.56 km/h) |
| 70 mph (112.65 km/h) | 72.65 mph (116.91 km/h) |
| 75 mph (120.7 km/h) | 77.84 mph (125.27 km/h) |
| 80 mph (128.75 km/h) | 83.03 mph (133.62 km/h) |
| 85 mph (136.79 km/h) | 88.21 mph (141.97 km/h) |
| 90 mph (144.84 km/h) | 93.4 mph (150.32 km/h) |
| 95 mph (152.89 km/h) | 98.59 mph (158.67 km/h) |
| 100 mph (160.93 km/h) | 103.78 mph (167.02 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
