Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-20 | 185/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.8 (706) | 28.74 (730) | 0.94 (24) 3.4% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 87.32 (2217.96) | 90.29 (2293.36) | 2.97 (75.4) 3.4% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.37 (111) | 0.47 (12) 12.1% |
| Revolutions per mile (km) | 725.6 (450.86) | 701.74 (436.04) | -23.86 (-14.82) -3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.28 km/h) |
| 25 mph (40.23 km/h) | 25.85 mph (41.6 km/h) |
| 30 mph (48.28 km/h) | 31.02 mph (49.92 km/h) |
| 35 mph (56.33 km/h) | 36.19 mph (58.24 km/h) |
| 40 mph (64.37 km/h) | 41.36 mph (66.56 km/h) |
| 45 mph (72.42 km/h) | 46.53 mph (74.88 km/h) |
| 50 mph (80.47 km/h) | 51.7 mph (83.2 km/h) |
| 55 mph (88.51 km/h) | 56.87 mph (91.52 km/h) |
| 60 mph (96.56 km/h) | 62.04 mph (99.84 km/h) |
| 65 mph (104.61 km/h) | 67.21 mph (108.16 km/h) |
| 70 mph (112.65 km/h) | 72.38 mph (116.48 km/h) |
| 75 mph (120.7 km/h) | 77.55 mph (124.8 km/h) |
| 80 mph (128.75 km/h) | 82.72 mph (133.12 km/h) |
| 85 mph (136.79 km/h) | 87.89 mph (141.44 km/h) |
| 90 mph (144.84 km/h) | 93.06 mph (149.77 km/h) |
| 95 mph (152.89 km/h) | 98.23 mph (158.09 km/h) |
| 100 mph (160.93 km/h) | 103.4 mph (166.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1786 | 2075 | 2234 | 2333 | 2439 | 2515 | 2599 | 2698 | 2834 | 2971 | 3123 | 3245 | 3465 | 3708 | 3898 | 4020 | 4088 | 4339 | 4689 | 5449 |
Better Fuel Economy Factory Ratios Increased Power
