Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 25.5/8-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 25.51 (647.92) | 0.17 (4.32) 0.7% |
| Width inches (mm) | 7.09 (180) | 7.99 (203) | 0.91 (23) 12.8% |
| Circum. inches (mm) | 79.6 (2021.93) | 80.14 (2035.5) | 0.53 (13.57) 0.7% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.75 (146.16) | 0.09 (2.16) 1.5% |
| Revolutions per mile (km) | 795.94 (494.58) | 790.64 (491.28) | -5.31 (-3.3) -0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.13 mph (32.4 km/h) |
| 25 mph (40.23 km/h) | 25.17 mph (40.5 km/h) |
| 30 mph (48.28 km/h) | 30.2 mph (48.6 km/h) |
| 35 mph (56.33 km/h) | 35.23 mph (56.71 km/h) |
| 40 mph (64.37 km/h) | 40.27 mph (64.81 km/h) |
| 45 mph (72.42 km/h) | 45.3 mph (72.91 km/h) |
| 50 mph (80.47 km/h) | 50.34 mph (81.01 km/h) |
| 55 mph (88.51 km/h) | 55.37 mph (89.11 km/h) |
| 60 mph (96.56 km/h) | 60.4 mph (97.21 km/h) |
| 65 mph (104.61 km/h) | 65.44 mph (105.31 km/h) |
| 70 mph (112.65 km/h) | 70.47 mph (113.41 km/h) |
| 75 mph (120.7 km/h) | 75.5 mph (121.51 km/h) |
| 80 mph (128.75 km/h) | 80.54 mph (129.61 km/h) |
| 85 mph (136.79 km/h) | 85.57 mph (137.71 km/h) |
| 90 mph (144.84 km/h) | 90.6 mph (145.81 km/h) |
| 95 mph (152.89 km/h) | 95.64 mph (153.91 km/h) |
| 100 mph (160.93 km/h) | 100.67 mph (162.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2012 | 2337 | 2517 | 2628 | 2748 | 2834 | 2928 | 3039 | 3194 | 3348 | 3519 | 3656 | 3904 | 4178 | 4392 | 4529 | 4606 | 4889 | 5283 | 6139 |
Better Fuel Economy Factory Ratios Increased Power
