Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/85-16 | 180/50-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 23.09 (586.4) | -2.28 (-58) -9% |
| Width inches (mm) | 5.51 (140) | 7.09 (180) | 1.57 (40) 28.6% |
| Circum. inches (mm) | 79.7 (2024.44) | 72.53 (1842.23) | -7.17 (-182.21) -9% |
| Sidewall Height inches (mm) | 4.69 (119) | 3.54 (90) | -1.14 (-29) -24.4% |
| Revolutions per mile (km) | 794.96 (493.96) | 873.58 (542.82) | 78.63 (48.86) 9.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.2 mph (29.29 km/h) |
| 25 mph (40.23 km/h) | 22.75 mph (36.61 km/h) |
| 30 mph (48.28 km/h) | 27.3 mph (43.93 km/h) |
| 35 mph (56.33 km/h) | 31.85 mph (51.26 km/h) |
| 40 mph (64.37 km/h) | 36.4 mph (58.58 km/h) |
| 45 mph (72.42 km/h) | 40.95 mph (65.9 km/h) |
| 50 mph (80.47 km/h) | 45.5 mph (73.22 km/h) |
| 55 mph (88.51 km/h) | 50.05 mph (80.55 km/h) |
| 60 mph (96.56 km/h) | 54.6 mph (87.87 km/h) |
| 65 mph (104.61 km/h) | 59.15 mph (95.19 km/h) |
| 70 mph (112.65 km/h) | 63.7 mph (102.51 km/h) |
| 75 mph (120.7 km/h) | 68.25 mph (109.84 km/h) |
| 80 mph (128.75 km/h) | 72.8 mph (117.16 km/h) |
| 85 mph (136.79 km/h) | 77.35 mph (124.48 km/h) |
| 90 mph (144.84 km/h) | 81.9 mph (131.8 km/h) |
| 95 mph (152.89 km/h) | 86.45 mph (139.13 km/h) |
| 100 mph (160.93 km/h) | 91 mph (146.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2223 | 2583 | 2781 | 2904 | 3037 | 3131 | 3235 | 3358 | 3529 | 3699 | 3888 | 4039 | 4314 | 4616 | 4853 | 5004 | 5089 | 5402 | 5837 | 6783 |
Better Fuel Economy Factory Ratios Increased Power
