Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 165/65-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 24.44 (620.9) | 3.25 (82.5) 15.3% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 66.59 (1691.43) | 76.8 (1950.61) | 10.2 (259.18) 15.3% |
| Sidewall Height inches (mm) | 2.6 (66) | 4.22 (107.25) | 1.62 (41.25) 62.5% |
| Revolutions per mile (km) | 951.47 (591.21) | 825.04 (512.66) | -126.42 (-78.56) -13.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.06 mph (37.12 km/h) |
| 25 mph (40.23 km/h) | 28.83 mph (46.4 km/h) |
| 30 mph (48.28 km/h) | 34.6 mph (55.68 km/h) |
| 35 mph (56.33 km/h) | 40.36 mph (64.96 km/h) |
| 40 mph (64.37 km/h) | 46.13 mph (74.24 km/h) |
| 45 mph (72.42 km/h) | 51.9 mph (83.52 km/h) |
| 50 mph (80.47 km/h) | 57.66 mph (92.8 km/h) |
| 55 mph (88.51 km/h) | 63.43 mph (102.08 km/h) |
| 60 mph (96.56 km/h) | 69.19 mph (111.36 km/h) |
| 65 mph (104.61 km/h) | 74.96 mph (120.64 km/h) |
| 70 mph (112.65 km/h) | 80.73 mph (129.92 km/h) |
| 75 mph (120.7 km/h) | 86.49 mph (139.2 km/h) |
| 80 mph (128.75 km/h) | 92.26 mph (148.48 km/h) |
| 85 mph (136.79 km/h) | 98.02 mph (157.76 km/h) |
| 90 mph (144.84 km/h) | 103.79 mph (167.04 km/h) |
| 95 mph (152.89 km/h) | 109.56 mph (176.32 km/h) |
| 100 mph (160.93 km/h) | 115.32 mph (185.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2100 | 2439 | 2627 | 2743 | 2868 | 2957 | 3056 | 3172 | 3333 | 3493 | 3672 | 3815 | 4074 | 4360 | 4583 | 4726 | 4807 | 5102 | 5513 | 6406 |
Better Fuel Economy Factory Ratios Increased Power
