Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/85-16 | 140/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 25.17 (639.2) | -0.2 (-5.2) -0.8% |
| Width inches (mm) | 5.51 (140) | 5.51 (140) | 0 (0) 0% |
| Circum. inches (mm) | 79.7 (2024.44) | 79.06 (2008.11) | -0.64 (-16.34) -0.8% |
| Sidewall Height inches (mm) | 4.69 (119) | 3.58 (91) | -1.1 (-28) -23.5% |
| Revolutions per mile (km) | 794.96 (493.96) | 801.42 (497.98) | 6.47 (4.02) 0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.84 mph (31.93 km/h) |
| 25 mph (40.23 km/h) | 24.8 mph (39.91 km/h) |
| 30 mph (48.28 km/h) | 29.76 mph (47.89 km/h) |
| 35 mph (56.33 km/h) | 34.72 mph (55.87 km/h) |
| 40 mph (64.37 km/h) | 39.68 mph (63.85 km/h) |
| 45 mph (72.42 km/h) | 44.64 mph (71.84 km/h) |
| 50 mph (80.47 km/h) | 49.6 mph (79.82 km/h) |
| 55 mph (88.51 km/h) | 54.56 mph (87.8 km/h) |
| 60 mph (96.56 km/h) | 59.52 mph (95.78 km/h) |
| 65 mph (104.61 km/h) | 64.48 mph (103.76 km/h) |
| 70 mph (112.65 km/h) | 69.44 mph (111.75 km/h) |
| 75 mph (120.7 km/h) | 74.39 mph (119.73 km/h) |
| 80 mph (128.75 km/h) | 79.35 mph (127.71 km/h) |
| 85 mph (136.79 km/h) | 84.31 mph (135.69 km/h) |
| 90 mph (144.84 km/h) | 89.27 mph (143.67 km/h) |
| 95 mph (152.89 km/h) | 94.23 mph (151.65 km/h) |
| 100 mph (160.93 km/h) | 99.19 mph (159.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2039 | 2369 | 2552 | 2664 | 2786 | 2873 | 2968 | 3081 | 3237 | 3393 | 3567 | 3706 | 3957 | 4235 | 4452 | 4591 | 4669 | 4955 | 5355 | 6223 |
Better Fuel Economy Factory Ratios Increased Power
