Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 140/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 26.92 (683.8) | 1.58 (40.2) 6.2% |
| Width inches (mm) | 7.09 (180) | 5.51 (140) | -1.57 (-40) -22.2% |
| Circum. inches (mm) | 79.6 (2021.93) | 84.58 (2148.22) | 4.97 (126.29) 6.2% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.96 (126) | -0.71 (-18) -12.5% |
| Revolutions per mile (km) | 795.94 (494.58) | 749.15 (465.5) | -46.79 (-29.08) -5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.25 mph (34.2 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.75 km/h) |
| 30 mph (48.28 km/h) | 31.87 mph (51.3 km/h) |
| 35 mph (56.33 km/h) | 37.19 mph (59.85 km/h) |
| 40 mph (64.37 km/h) | 42.5 mph (68.39 km/h) |
| 45 mph (72.42 km/h) | 47.81 mph (76.94 km/h) |
| 50 mph (80.47 km/h) | 53.12 mph (85.49 km/h) |
| 55 mph (88.51 km/h) | 58.44 mph (94.04 km/h) |
| 60 mph (96.56 km/h) | 63.75 mph (102.59 km/h) |
| 65 mph (104.61 km/h) | 69.06 mph (111.14 km/h) |
| 70 mph (112.65 km/h) | 74.37 mph (119.69 km/h) |
| 75 mph (120.7 km/h) | 79.68 mph (128.24 km/h) |
| 80 mph (128.75 km/h) | 85 mph (136.79 km/h) |
| 85 mph (136.79 km/h) | 90.31 mph (145.34 km/h) |
| 90 mph (144.84 km/h) | 95.62 mph (153.89 km/h) |
| 95 mph (152.89 km/h) | 100.93 mph (162.44 km/h) |
| 100 mph (160.93 km/h) | 106.25 mph (170.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1906 | 2215 | 2385 | 2491 | 2604 | 2685 | 2774 | 2880 | 3026 | 3172 | 3334 | 3464 | 3699 | 3959 | 4162 | 4292 | 4365 | 4632 | 5005 | 5817 |
Better Fuel Economy Factory Ratios Increased Power
