Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-17 | 155/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.69 (728.8) | 28.98 (736.2) | 0.29 (7.4) 1% |
| Width inches (mm) | 6.5 (165) | 6.1 (155) | -0.39 (-10) -6.1% |
| Circum. inches (mm) | 90.14 (2289.59) | 91.06 (2312.84) | 0.92 (23.25) 1% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 5.49 (139.5) | -0.35 (-9) -6.1% |
| Revolutions per mile (km) | 702.9 (436.76) | 695.83 (432.37) | -7.07 (-4.39) -1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.2 mph (32.51 km/h) |
| 25 mph (40.23 km/h) | 25.25 mph (40.64 km/h) |
| 30 mph (48.28 km/h) | 30.3 mph (48.77 km/h) |
| 35 mph (56.33 km/h) | 35.36 mph (56.9 km/h) |
| 40 mph (64.37 km/h) | 40.41 mph (65.03 km/h) |
| 45 mph (72.42 km/h) | 45.46 mph (73.16 km/h) |
| 50 mph (80.47 km/h) | 50.51 mph (81.28 km/h) |
| 55 mph (88.51 km/h) | 55.56 mph (89.41 km/h) |
| 60 mph (96.56 km/h) | 60.61 mph (97.54 km/h) |
| 65 mph (104.61 km/h) | 65.66 mph (105.67 km/h) |
| 70 mph (112.65 km/h) | 70.71 mph (113.8 km/h) |
| 75 mph (120.7 km/h) | 75.76 mph (121.93 km/h) |
| 80 mph (128.75 km/h) | 80.81 mph (130.06 km/h) |
| 85 mph (136.79 km/h) | 85.86 mph (138.18 km/h) |
| 90 mph (144.84 km/h) | 90.91 mph (146.31 km/h) |
| 95 mph (152.89 km/h) | 95.96 mph (154.44 km/h) |
| 100 mph (160.93 km/h) | 101.02 mph (162.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1771 | 2057 | 2215 | 2313 | 2419 | 2494 | 2577 | 2675 | 2811 | 2946 | 3097 | 3217 | 3436 | 3677 | 3866 | 3986 | 4054 | 4303 | 4649 | 5403 |
Better Fuel Economy Factory Ratios Increased Power
