Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 25/7.5-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 24.98 (634.46) | -0.36 (-9.14) -1.4% |
| Width inches (mm) | 7.09 (180) | 7.52 (191) | 0.43 (11) 6.1% |
| Circum. inches (mm) | 79.6 (2021.93) | 78.47 (1993.21) | -1.13 (-28.71) -1.4% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.49 (139.43) | -0.18 (-4.57) -3.2% |
| Revolutions per mile (km) | 795.94 (494.58) | 807.41 (501.7) | 11.47 (7.12) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.73 km/h) |
| 25 mph (40.23 km/h) | 24.64 mph (39.66 km/h) |
| 30 mph (48.28 km/h) | 29.57 mph (47.59 km/h) |
| 35 mph (56.33 km/h) | 34.5 mph (55.53 km/h) |
| 40 mph (64.37 km/h) | 39.43 mph (63.46 km/h) |
| 45 mph (72.42 km/h) | 44.36 mph (71.39 km/h) |
| 50 mph (80.47 km/h) | 49.29 mph (79.32 km/h) |
| 55 mph (88.51 km/h) | 54.22 mph (87.26 km/h) |
| 60 mph (96.56 km/h) | 59.15 mph (95.19 km/h) |
| 65 mph (104.61 km/h) | 64.08 mph (103.12 km/h) |
| 70 mph (112.65 km/h) | 69.01 mph (111.05 km/h) |
| 75 mph (120.7 km/h) | 73.93 mph (118.99 km/h) |
| 80 mph (128.75 km/h) | 78.86 mph (126.92 km/h) |
| 85 mph (136.79 km/h) | 83.79 mph (134.85 km/h) |
| 90 mph (144.84 km/h) | 88.72 mph (142.78 km/h) |
| 95 mph (152.89 km/h) | 93.65 mph (150.72 km/h) |
| 100 mph (160.93 km/h) | 98.58 mph (158.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2055 | 2387 | 2571 | 2684 | 2807 | 2894 | 2990 | 3104 | 3261 | 3419 | 3594 | 3733 | 3987 | 4267 | 4485 | 4625 | 4704 | 4993 | 5395 | 6269 |
Better Fuel Economy Factory Ratios Increased Power
