Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 140/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 22.82 (579.6) | -2.52 (-64) -9.9% |
| Width inches (mm) | 7.09 (180) | 5.51 (140) | -1.57 (-40) -22.2% |
| Circum. inches (mm) | 79.6 (2021.93) | 71.69 (1820.87) | -7.92 (-201.06) -9.9% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.41 (112) | -1.26 (-32) -22.2% |
| Revolutions per mile (km) | 795.94 (494.58) | 883.83 (549.19) | 87.89 (54.61) 11% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.01 mph (28.99 km/h) |
| 25 mph (40.23 km/h) | 22.51 mph (36.23 km/h) |
| 30 mph (48.28 km/h) | 27.02 mph (43.48 km/h) |
| 35 mph (56.33 km/h) | 31.52 mph (50.73 km/h) |
| 40 mph (64.37 km/h) | 36.02 mph (57.97 km/h) |
| 45 mph (72.42 km/h) | 40.53 mph (65.22 km/h) |
| 50 mph (80.47 km/h) | 45.03 mph (72.47 km/h) |
| 55 mph (88.51 km/h) | 49.53 mph (79.71 km/h) |
| 60 mph (96.56 km/h) | 54.03 mph (86.96 km/h) |
| 65 mph (104.61 km/h) | 58.54 mph (94.21 km/h) |
| 70 mph (112.65 km/h) | 63.04 mph (101.45 km/h) |
| 75 mph (120.7 km/h) | 67.54 mph (108.7 km/h) |
| 80 mph (128.75 km/h) | 72.04 mph (115.95 km/h) |
| 85 mph (136.79 km/h) | 76.55 mph (123.19 km/h) |
| 90 mph (144.84 km/h) | 81.05 mph (130.44 km/h) |
| 95 mph (152.89 km/h) | 85.55 mph (137.68 km/h) |
| 100 mph (160.93 km/h) | 90.06 mph (144.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2249 | 2613 | 2814 | 2938 | 3072 | 3168 | 3273 | 3398 | 3570 | 3742 | 3934 | 4087 | 4364 | 4671 | 4910 | 5063 | 5149 | 5465 | 5905 | 6862 |
Better Fuel Economy Factory Ratios Increased Power
