Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 255/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 30.06 (763.6) | 4.72 (120) 18.6% |
| Width inches (mm) | 7.09 (180) | 10.04 (255) | 2.95 (75) 41.7% |
| Circum. inches (mm) | 79.6 (2021.93) | 94.45 (2398.92) | 14.84 (376.99) 18.6% |
| Sidewall Height inches (mm) | 5.67 (144) | 8.03 (204) | 2.36 (60) 41.7% |
| Revolutions per mile (km) | 795.94 (494.58) | 670.86 (416.85) | -125.08 (-77.72) -15.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.73 mph (38.19 km/h) |
| 25 mph (40.23 km/h) | 29.66 mph (47.74 km/h) |
| 30 mph (48.28 km/h) | 35.59 mph (57.28 km/h) |
| 35 mph (56.33 km/h) | 41.53 mph (66.83 km/h) |
| 40 mph (64.37 km/h) | 47.46 mph (76.38 km/h) |
| 45 mph (72.42 km/h) | 53.39 mph (85.92 km/h) |
| 50 mph (80.47 km/h) | 59.32 mph (95.47 km/h) |
| 55 mph (88.51 km/h) | 65.25 mph (105.02 km/h) |
| 60 mph (96.56 km/h) | 71.19 mph (114.56 km/h) |
| 65 mph (104.61 km/h) | 77.12 mph (124.11 km/h) |
| 70 mph (112.65 km/h) | 83.05 mph (133.66 km/h) |
| 75 mph (120.7 km/h) | 88.98 mph (143.21 km/h) |
| 80 mph (128.75 km/h) | 94.92 mph (152.75 km/h) |
| 85 mph (136.79 km/h) | 100.85 mph (162.3 km/h) |
| 90 mph (144.84 km/h) | 106.78 mph (171.85 km/h) |
| 95 mph (152.89 km/h) | 112.71 mph (181.39 km/h) |
| 100 mph (160.93 km/h) | 118.65 mph (190.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1707 | 1983 | 2136 | 2230 | 2332 | 2405 | 2485 | 2579 | 2710 | 2841 | 2986 | 3102 | 3313 | 3545 | 3727 | 3843 | 3908 | 4148 | 4482 | 5209 |
Better Fuel Economy Factory Ratios Increased Power
