Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 25.5/8.5-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 25.57 (649.36) | 0.23 (5.76) 0.9% |
| Width inches (mm) | 7.09 (180) | 8.5 (216) | 1.42 (36) 20% |
| Circum. inches (mm) | 79.6 (2021.93) | 80.32 (2040.02) | 0.71 (18.1) 0.9% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.78 (146.88) | 0.11 (2.88) 2% |
| Revolutions per mile (km) | 795.94 (494.58) | 788.88 (490.19) | -7.06 (-4.39) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.18 mph (32.48 km/h) |
| 25 mph (40.23 km/h) | 25.22 mph (40.59 km/h) |
| 30 mph (48.28 km/h) | 30.27 mph (48.71 km/h) |
| 35 mph (56.33 km/h) | 35.31 mph (56.83 km/h) |
| 40 mph (64.37 km/h) | 40.36 mph (64.95 km/h) |
| 45 mph (72.42 km/h) | 45.4 mph (73.07 km/h) |
| 50 mph (80.47 km/h) | 50.45 mph (81.19 km/h) |
| 55 mph (88.51 km/h) | 55.49 mph (89.31 km/h) |
| 60 mph (96.56 km/h) | 60.54 mph (97.43 km/h) |
| 65 mph (104.61 km/h) | 65.58 mph (105.54 km/h) |
| 70 mph (112.65 km/h) | 70.63 mph (113.66 km/h) |
| 75 mph (120.7 km/h) | 75.67 mph (121.78 km/h) |
| 80 mph (128.75 km/h) | 80.72 mph (129.9 km/h) |
| 85 mph (136.79 km/h) | 85.76 mph (138.02 km/h) |
| 90 mph (144.84 km/h) | 90.81 mph (146.14 km/h) |
| 95 mph (152.89 km/h) | 95.85 mph (154.26 km/h) |
| 100 mph (160.93 km/h) | 100.89 mph (162.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | 2332 | 2512 | 2623 | 2742 | 2828 | 2922 | 3033 | 3186 | 3340 | 3511 | 3648 | 3896 | 4169 | 4382 | 4519 | 4596 | 4878 | 5271 | 6125 |
Better Fuel Economy Factory Ratios Increased Power
