Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-18 | 165/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.54 (674.2) | 26.44 (671.7) | -0.1 (-2.5) -0.4% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 83.39 (2118.06) | 83.08 (2110.21) | -0.31 (-7.85) -0.4% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.22 (107.25) | -0.05 (-1.25) -1.2% |
| Revolutions per mile (km) | 759.82 (472.13) | 762.65 (473.89) | 2.83 (1.76) 0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.93 mph (32.07 km/h) |
| 25 mph (40.23 km/h) | 24.91 mph (40.08 km/h) |
| 30 mph (48.28 km/h) | 29.89 mph (48.1 km/h) |
| 35 mph (56.33 km/h) | 34.87 mph (56.12 km/h) |
| 40 mph (64.37 km/h) | 39.85 mph (64.14 km/h) |
| 45 mph (72.42 km/h) | 44.83 mph (72.15 km/h) |
| 50 mph (80.47 km/h) | 49.81 mph (80.17 km/h) |
| 55 mph (88.51 km/h) | 54.8 mph (88.19 km/h) |
| 60 mph (96.56 km/h) | 59.78 mph (96.2 km/h) |
| 65 mph (104.61 km/h) | 64.76 mph (104.22 km/h) |
| 70 mph (112.65 km/h) | 69.74 mph (112.24 km/h) |
| 75 mph (120.7 km/h) | 74.72 mph (120.25 km/h) |
| 80 mph (128.75 km/h) | 79.7 mph (128.27 km/h) |
| 85 mph (136.79 km/h) | 84.68 mph (136.29 km/h) |
| 90 mph (144.84 km/h) | 89.67 mph (144.3 km/h) |
| 95 mph (152.89 km/h) | 94.65 mph (152.32 km/h) |
| 100 mph (160.93 km/h) | 99.63 mph (160.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1941 | 2255 | 2428 | 2535 | 2651 | 2734 | 2824 | 2932 | 3080 | 3229 | 3394 | 3526 | 3766 | 4030 | 4237 | 4369 | 4443 | 4716 | 5096 | 5921 |
Better Fuel Economy Factory Ratios Increased Power
