Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 175/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 23.02 (584.8) | 3.88 (98.5) 20.3% |
| Width inches (mm) | 6.5 (165) | 6.89 (175) | 0.39 (10) 6.1% |
| Circum. inches (mm) | 60.15 (1527.76) | 72.33 (1837.2) | 12.18 (309.45) 20.3% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 5.51 (140) | 1.94 (49.25) 54.3% |
| Revolutions per mile (km) | 1053.4 (654.55) | 875.97 (544.3) | -177.43 (-110.25) -16.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.05 mph (38.71 km/h) |
| 25 mph (40.23 km/h) | 30.06 mph (48.38 km/h) |
| 30 mph (48.28 km/h) | 36.08 mph (58.06 km/h) |
| 35 mph (56.33 km/h) | 42.09 mph (67.74 km/h) |
| 40 mph (64.37 km/h) | 48.1 mph (77.41 km/h) |
| 45 mph (72.42 km/h) | 54.11 mph (87.09 km/h) |
| 50 mph (80.47 km/h) | 60.13 mph (96.77 km/h) |
| 55 mph (88.51 km/h) | 66.14 mph (106.44 km/h) |
| 60 mph (96.56 km/h) | 72.15 mph (116.12 km/h) |
| 65 mph (104.61 km/h) | 78.17 mph (125.8 km/h) |
| 70 mph (112.65 km/h) | 84.18 mph (135.47 km/h) |
| 75 mph (120.7 km/h) | 90.19 mph (145.15 km/h) |
| 80 mph (128.75 km/h) | 96.2 mph (154.83 km/h) |
| 85 mph (136.79 km/h) | 102.22 mph (164.5 km/h) |
| 90 mph (144.84 km/h) | 108.23 mph (174.18 km/h) |
| 95 mph (152.89 km/h) | 114.24 mph (183.86 km/h) |
| 100 mph (160.93 km/h) | 120.25 mph (193.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2229 | 2590 | 2789 | 2912 | 3045 | 3140 | 3244 | 3367 | 3538 | 3709 | 3899 | 4050 | 4326 | 4629 | 4866 | 5018 | 5103 | 5416 | 5853 | 6801 |
Better Fuel Economy Factory Ratios Increased Power
