Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 165/20-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 18.6 (472.4) | -2.6 (-66) -12.3% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 66.59 (1691.43) | 58.43 (1484.09) | -8.16 (-207.35) -12.3% |
| Sidewall Height inches (mm) | 2.6 (66) | 1.3 (33) | -1.3 (-33) -50% |
| Revolutions per mile (km) | 951.47 (591.21) | 1084.4 (673.81) | 132.93 (82.6) 14% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.55 mph (28.24 km/h) |
| 25 mph (40.23 km/h) | 21.94 mph (35.3 km/h) |
| 30 mph (48.28 km/h) | 26.32 mph (42.36 km/h) |
| 35 mph (56.33 km/h) | 30.71 mph (49.42 km/h) |
| 40 mph (64.37 km/h) | 35.1 mph (56.48 km/h) |
| 45 mph (72.42 km/h) | 39.48 mph (63.54 km/h) |
| 50 mph (80.47 km/h) | 43.87 mph (70.6 km/h) |
| 55 mph (88.51 km/h) | 48.26 mph (77.66 km/h) |
| 60 mph (96.56 km/h) | 52.64 mph (84.72 km/h) |
| 65 mph (104.61 km/h) | 57.03 mph (91.78 km/h) |
| 70 mph (112.65 km/h) | 61.42 mph (98.84 km/h) |
| 75 mph (120.7 km/h) | 65.81 mph (105.9 km/h) |
| 80 mph (128.75 km/h) | 70.19 mph (112.97 km/h) |
| 85 mph (136.79 km/h) | 74.58 mph (120.03 km/h) |
| 90 mph (144.84 km/h) | 78.97 mph (127.09 km/h) |
| 95 mph (152.89 km/h) | 83.35 mph (134.15 km/h) |
| 100 mph (160.93 km/h) | 87.74 mph (141.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
