Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 205/30-11 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 15.84 (402.4) | -3.3 (-83.9) -17.3% |
| Width inches (mm) | 6.5 (165) | 8.07 (205) | 1.57 (40) 24.2% |
| Circum. inches (mm) | 60.15 (1527.76) | 49.77 (1264.18) | -10.38 (-263.58) -17.3% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 2.42 (61.5) | -1.15 (-29.25) -32.2% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1273.04 (791.03) | 219.63 (136.47) 20.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.55 mph (26.63 km/h) |
| 25 mph (40.23 km/h) | 20.69 mph (33.29 km/h) |
| 30 mph (48.28 km/h) | 24.82 mph (39.95 km/h) |
| 35 mph (56.33 km/h) | 28.96 mph (46.61 km/h) |
| 40 mph (64.37 km/h) | 33.1 mph (53.27 km/h) |
| 45 mph (72.42 km/h) | 37.24 mph (59.93 km/h) |
| 50 mph (80.47 km/h) | 41.37 mph (66.58 km/h) |
| 55 mph (88.51 km/h) | 45.51 mph (73.24 km/h) |
| 60 mph (96.56 km/h) | 49.65 mph (79.9 km/h) |
| 65 mph (104.61 km/h) | 53.79 mph (86.56 km/h) |
| 70 mph (112.65 km/h) | 57.92 mph (93.22 km/h) |
| 75 mph (120.7 km/h) | 62.06 mph (99.88 km/h) |
| 80 mph (128.75 km/h) | 66.2 mph (106.54 km/h) |
| 85 mph (136.79 km/h) | 70.34 mph (113.19 km/h) |
| 90 mph (144.84 km/h) | 74.47 mph (119.85 km/h) |
| 95 mph (152.89 km/h) | 78.61 mph (126.51 km/h) |
| 100 mph (160.93 km/h) | 82.75 mph (133.17 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
