Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/85-16 | 165/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 27.09 (688.2) | 1.72 (43.8) 6.8% |
| Width inches (mm) | 5.51 (140) | 6.5 (165) | 0.98 (25) 17.9% |
| Circum. inches (mm) | 79.7 (2024.44) | 85.12 (2162.04) | 5.42 (137.6) 6.8% |
| Sidewall Height inches (mm) | 4.69 (119) | 4.55 (115.5) | -0.14 (-3.5) -2.9% |
| Revolutions per mile (km) | 794.96 (493.96) | 744.36 (462.52) | -50.59 (-31.44) -6.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.36 mph (34.37 km/h) |
| 25 mph (40.23 km/h) | 26.7 mph (42.97 km/h) |
| 30 mph (48.28 km/h) | 32.04 mph (51.56 km/h) |
| 35 mph (56.33 km/h) | 37.38 mph (60.16 km/h) |
| 40 mph (64.37 km/h) | 42.72 mph (68.75 km/h) |
| 45 mph (72.42 km/h) | 48.06 mph (77.34 km/h) |
| 50 mph (80.47 km/h) | 53.4 mph (85.94 km/h) |
| 55 mph (88.51 km/h) | 58.74 mph (94.53 km/h) |
| 60 mph (96.56 km/h) | 64.08 mph (103.12 km/h) |
| 65 mph (104.61 km/h) | 69.42 mph (111.72 km/h) |
| 70 mph (112.65 km/h) | 74.76 mph (120.31 km/h) |
| 75 mph (120.7 km/h) | 80.1 mph (128.91 km/h) |
| 80 mph (128.75 km/h) | 85.44 mph (137.5 km/h) |
| 85 mph (136.79 km/h) | 90.78 mph (146.09 km/h) |
| 90 mph (144.84 km/h) | 96.12 mph (154.69 km/h) |
| 95 mph (152.89 km/h) | 101.46 mph (163.28 km/h) |
| 100 mph (160.93 km/h) | 106.8 mph (171.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1894 | 2201 | 2370 | 2475 | 2587 | 2668 | 2757 | 2862 | 3007 | 3152 | 3313 | 3442 | 3676 | 3934 | 4135 | 4264 | 4337 | 4603 | 4973 | 5780 |
Better Fuel Economy Factory Ratios Increased Power
