Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-20 | 155/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.8 (706) | 26.71 (678.5) | -1.08 (-27.5) -3.9% |
| Width inches (mm) | 6.5 (165) | 6.1 (155) | -0.39 (-10) -6.1% |
| Circum. inches (mm) | 87.32 (2217.96) | 83.92 (2131.57) | -3.4 (-86.39) -3.9% |
| Sidewall Height inches (mm) | 3.9 (99) | 3.36 (85.25) | -0.54 (-13.75) -13.9% |
| Revolutions per mile (km) | 725.6 (450.86) | 755 (469.14) | 29.41 (18.27) 4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.22 mph (30.93 km/h) |
| 25 mph (40.23 km/h) | 24.03 mph (38.67 km/h) |
| 30 mph (48.28 km/h) | 28.83 mph (46.4 km/h) |
| 35 mph (56.33 km/h) | 33.64 mph (54.13 km/h) |
| 40 mph (64.37 km/h) | 38.44 mph (61.87 km/h) |
| 45 mph (72.42 km/h) | 43.25 mph (69.6 km/h) |
| 50 mph (80.47 km/h) | 48.05 mph (77.33 km/h) |
| 55 mph (88.51 km/h) | 52.86 mph (85.07 km/h) |
| 60 mph (96.56 km/h) | 57.66 mph (92.8 km/h) |
| 65 mph (104.61 km/h) | 62.47 mph (100.53 km/h) |
| 70 mph (112.65 km/h) | 67.27 mph (108.27 km/h) |
| 75 mph (120.7 km/h) | 72.08 mph (116 km/h) |
| 80 mph (128.75 km/h) | 76.88 mph (123.73 km/h) |
| 85 mph (136.79 km/h) | 81.69 mph (131.47 km/h) |
| 90 mph (144.84 km/h) | 86.49 mph (139.2 km/h) |
| 95 mph (152.89 km/h) | 91.3 mph (146.93 km/h) |
| 100 mph (160.93 km/h) | 96.1 mph (154.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1921 | 2232 | 2404 | 2510 | 2624 | 2706 | 2796 | 2902 | 3050 | 3197 | 3360 | 3491 | 3728 | 3990 | 4194 | 4325 | 4399 | 4668 | 5045 | 5862 |
Better Fuel Economy Factory Ratios Increased Power
