Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-20 | 185/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.8 (706) | 29.47 (748.5) | 1.67 (42.5) 6% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 87.32 (2217.96) | 92.58 (2351.48) | 5.26 (133.52) 6% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.73 (120.25) | 0.84 (21.25) 21.5% |
| Revolutions per mile (km) | 725.6 (450.86) | 684.4 (425.26) | -41.2 (-25.6) -5.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.2 mph (34.12 km/h) |
| 25 mph (40.23 km/h) | 26.5 mph (42.66 km/h) |
| 30 mph (48.28 km/h) | 31.81 mph (51.19 km/h) |
| 35 mph (56.33 km/h) | 37.11 mph (59.72 km/h) |
| 40 mph (64.37 km/h) | 42.41 mph (68.25 km/h) |
| 45 mph (72.42 km/h) | 47.71 mph (76.78 km/h) |
| 50 mph (80.47 km/h) | 53.01 mph (85.31 km/h) |
| 55 mph (88.51 km/h) | 58.31 mph (93.84 km/h) |
| 60 mph (96.56 km/h) | 63.61 mph (102.37 km/h) |
| 65 mph (104.61 km/h) | 68.91 mph (110.9 km/h) |
| 70 mph (112.65 km/h) | 74.21 mph (119.44 km/h) |
| 75 mph (120.7 km/h) | 79.51 mph (127.97 km/h) |
| 80 mph (128.75 km/h) | 84.82 mph (136.5 km/h) |
| 85 mph (136.79 km/h) | 90.12 mph (145.03 km/h) |
| 90 mph (144.84 km/h) | 95.42 mph (153.56 km/h) |
| 95 mph (152.89 km/h) | 100.72 mph (162.09 km/h) |
| 100 mph (160.93 km/h) | 106.02 mph (170.62 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1742 | 2023 | 2179 | 2275 | 2379 | 2453 | 2535 | 2631 | 2764 | 2898 | 3046 | 3165 | 3380 | 3617 | 3802 | 3921 | 3987 | 4232 | 4573 | 5314 |
Better Fuel Economy Factory Ratios Increased Power
