Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 255/20-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 16.02 (406.8) | -3.13 (-79.5) -16.3% |
| Width inches (mm) | 6.5 (165) | 10.04 (255) | 3.54 (90) 54.5% |
| Circum. inches (mm) | 60.15 (1527.76) | 50.31 (1278) | -9.83 (-249.76) -16.3% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 2.01 (51) | -1.56 (-39.75) -43.8% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1259.27 (782.47) | 205.86 (127.92) 19.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.73 mph (26.93 km/h) |
| 25 mph (40.23 km/h) | 20.91 mph (33.66 km/h) |
| 30 mph (48.28 km/h) | 25.1 mph (40.39 km/h) |
| 35 mph (56.33 km/h) | 29.28 mph (47.12 km/h) |
| 40 mph (64.37 km/h) | 33.46 mph (53.85 km/h) |
| 45 mph (72.42 km/h) | 37.64 mph (60.58 km/h) |
| 50 mph (80.47 km/h) | 41.83 mph (67.31 km/h) |
| 55 mph (88.51 km/h) | 46.01 mph (74.04 km/h) |
| 60 mph (96.56 km/h) | 50.19 mph (80.78 km/h) |
| 65 mph (104.61 km/h) | 54.37 mph (87.51 km/h) |
| 70 mph (112.65 km/h) | 58.56 mph (94.24 km/h) |
| 75 mph (120.7 km/h) | 62.74 mph (100.97 km/h) |
| 80 mph (128.75 km/h) | 66.92 mph (107.7 km/h) |
| 85 mph (136.79 km/h) | 71.1 mph (114.43 km/h) |
| 90 mph (144.84 km/h) | 75.29 mph (121.16 km/h) |
| 95 mph (152.89 km/h) | 79.47 mph (127.89 km/h) |
| 100 mph (160.93 km/h) | 83.65 mph (134.63 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
