Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 155/50-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 18.1 (459.8) | -1.04 (-26.5) -5.4% |
| Width inches (mm) | 6.5 (165) | 6.1 (155) | -0.39 (-10) -6.1% |
| Circum. inches (mm) | 60.15 (1527.76) | 56.87 (1444.5) | -3.28 (-83.25) -5.4% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 3.05 (77.5) | -0.52 (-13.25) -14.6% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1114.12 (692.28) | 60.71 (37.72) 5.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.91 mph (30.43 km/h) |
| 25 mph (40.23 km/h) | 23.64 mph (38.04 km/h) |
| 30 mph (48.28 km/h) | 28.37 mph (45.65 km/h) |
| 35 mph (56.33 km/h) | 33.09 mph (53.26 km/h) |
| 40 mph (64.37 km/h) | 37.82 mph (60.87 km/h) |
| 45 mph (72.42 km/h) | 42.55 mph (68.47 km/h) |
| 50 mph (80.47 km/h) | 47.28 mph (76.08 km/h) |
| 55 mph (88.51 km/h) | 52 mph (83.69 km/h) |
| 60 mph (96.56 km/h) | 56.73 mph (91.3 km/h) |
| 65 mph (104.61 km/h) | 61.46 mph (98.91 km/h) |
| 70 mph (112.65 km/h) | 66.19 mph (106.52 km/h) |
| 75 mph (120.7 km/h) | 70.91 mph (114.12 km/h) |
| 80 mph (128.75 km/h) | 75.64 mph (121.73 km/h) |
| 85 mph (136.79 km/h) | 80.37 mph (129.34 km/h) |
| 90 mph (144.84 km/h) | 85.1 mph (136.95 km/h) |
| 95 mph (152.89 km/h) | 89.82 mph (144.56 km/h) |
| 100 mph (160.93 km/h) | 94.55 mph (152.16 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
