Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-14 | 185/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.76 (603.6) | 25.65 (651.6) | 1.89 (48) 8% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 74.66 (1896.27) | 80.59 (2047.06) | 5.94 (150.8) 8% |
| Sidewall Height inches (mm) | 4.88 (124) | 5.83 (148) | 0.94 (24) 19.4% |
| Revolutions per mile (km) | 848.69 (527.35) | 786.17 (488.5) | -62.52 (-38.85) -7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.59 mph (34.75 km/h) |
| 25 mph (40.23 km/h) | 26.99 mph (43.43 km/h) |
| 30 mph (48.28 km/h) | 32.39 mph (52.12 km/h) |
| 35 mph (56.33 km/h) | 37.78 mph (60.81 km/h) |
| 40 mph (64.37 km/h) | 43.18 mph (69.49 km/h) |
| 45 mph (72.42 km/h) | 48.58 mph (78.18 km/h) |
| 50 mph (80.47 km/h) | 53.98 mph (86.87 km/h) |
| 55 mph (88.51 km/h) | 59.37 mph (95.55 km/h) |
| 60 mph (96.56 km/h) | 64.77 mph (104.24 km/h) |
| 65 mph (104.61 km/h) | 70.17 mph (112.93 km/h) |
| 70 mph (112.65 km/h) | 75.57 mph (121.61 km/h) |
| 75 mph (120.7 km/h) | 80.96 mph (130.3 km/h) |
| 80 mph (128.75 km/h) | 86.36 mph (138.99 km/h) |
| 85 mph (136.79 km/h) | 91.76 mph (147.67 km/h) |
| 90 mph (144.84 km/h) | 97.16 mph (156.36 km/h) |
| 95 mph (152.89 km/h) | 102.55 mph (165.05 km/h) |
| 100 mph (160.93 km/h) | 107.95 mph (173.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | 2324 | 2503 | 2614 | 2733 | 2818 | 2912 | 3022 | 3176 | 3329 | 3499 | 3635 | 3882 | 4155 | 4367 | 4504 | 4580 | 4861 | 5253 | 6104 |
Better Fuel Economy Factory Ratios Increased Power
