Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-16 | 185/45-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.15 (587.9) | 22.56 (572.9) | -0.59 (-15) -2.6% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 72.71 (1846.94) | 70.86 (1799.82) | -1.86 (-47.12) -2.6% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 3.28 (83.25) | -0.3 (-7.5) -8.3% |
| Revolutions per mile (km) | 871.36 (541.43) | 894.17 (555.61) | 22.81 (14.18) 2.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.49 mph (31.37 km/h) |
| 25 mph (40.23 km/h) | 24.36 mph (39.21 km/h) |
| 30 mph (48.28 km/h) | 29.23 mph (47.05 km/h) |
| 35 mph (56.33 km/h) | 34.11 mph (54.89 km/h) |
| 40 mph (64.37 km/h) | 38.98 mph (62.73 km/h) |
| 45 mph (72.42 km/h) | 43.85 mph (70.57 km/h) |
| 50 mph (80.47 km/h) | 48.72 mph (78.41 km/h) |
| 55 mph (88.51 km/h) | 53.6 mph (86.26 km/h) |
| 60 mph (96.56 km/h) | 58.47 mph (94.1 km/h) |
| 65 mph (104.61 km/h) | 63.34 mph (101.94 km/h) |
| 70 mph (112.65 km/h) | 68.21 mph (109.78 km/h) |
| 75 mph (120.7 km/h) | 73.09 mph (117.62 km/h) |
| 80 mph (128.75 km/h) | 77.96 mph (125.46 km/h) |
| 85 mph (136.79 km/h) | 82.83 mph (133.3 km/h) |
| 90 mph (144.84 km/h) | 87.7 mph (141.15 km/h) |
| 95 mph (152.89 km/h) | 92.58 mph (148.99 km/h) |
| 100 mph (160.93 km/h) | 97.45 mph (156.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2275 | 2643 | 2847 | 2973 | 3108 | 3205 | 3312 | 3437 | 3612 | 3786 | 3980 | 4135 | 4415 | 4725 | 4967 | 5122 | 5209 | 5529 | 5974 | 6943 |
Better Fuel Economy Factory Ratios Increased Power
