Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 255/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 23.04 (585.3) | 3.9 (99) 20.4% |
| Width inches (mm) | 6.5 (165) | 10.04 (255) | 3.54 (90) 54.5% |
| Circum. inches (mm) | 60.15 (1527.76) | 72.39 (1838.77) | 12.24 (311.02) 20.4% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 5.52 (140.25) | 1.95 (49.5) 54.5% |
| Revolutions per mile (km) | 1053.4 (654.55) | 875.23 (543.84) | -178.18 (-110.71) -16.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.07 mph (38.74 km/h) |
| 25 mph (40.23 km/h) | 30.09 mph (48.42 km/h) |
| 30 mph (48.28 km/h) | 36.11 mph (58.11 km/h) |
| 35 mph (56.33 km/h) | 42.13 mph (67.79 km/h) |
| 40 mph (64.37 km/h) | 48.14 mph (77.48 km/h) |
| 45 mph (72.42 km/h) | 54.16 mph (87.16 km/h) |
| 50 mph (80.47 km/h) | 60.18 mph (96.85 km/h) |
| 55 mph (88.51 km/h) | 66.2 mph (106.53 km/h) |
| 60 mph (96.56 km/h) | 72.21 mph (116.22 km/h) |
| 65 mph (104.61 km/h) | 78.23 mph (125.9 km/h) |
| 70 mph (112.65 km/h) | 84.25 mph (135.59 km/h) |
| 75 mph (120.7 km/h) | 90.27 mph (145.27 km/h) |
| 80 mph (128.75 km/h) | 96.29 mph (154.96 km/h) |
| 85 mph (136.79 km/h) | 102.3 mph (164.64 km/h) |
| 90 mph (144.84 km/h) | 108.32 mph (174.33 km/h) |
| 95 mph (152.89 km/h) | 114.34 mph (184.01 km/h) |
| 100 mph (160.93 km/h) | 120.36 mph (193.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2227 | 2587 | 2786 | 2910 | 3042 | 3137 | 3241 | 3365 | 3535 | 3706 | 3895 | 4047 | 4322 | 4625 | 4862 | 5014 | 5099 | 5412 | 5848 | 6796 |
Better Fuel Economy Factory Ratios Increased Power
