Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 120/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 18.61 (472.8) | -0.53 (-13.5) -2.8% |
| Width inches (mm) | 6.5 (165) | 4.72 (120) | -1.77 (-45) -27.3% |
| Circum. inches (mm) | 60.15 (1527.76) | 58.48 (1485.35) | -1.67 (-42.41) -2.8% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 3.31 (84) | -0.27 (-6.75) -7.4% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1083.48 (673.24) | 30.08 (18.69) 2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.44 mph (31.29 km/h) |
| 25 mph (40.23 km/h) | 24.31 mph (39.12 km/h) |
| 30 mph (48.28 km/h) | 29.17 mph (46.94 km/h) |
| 35 mph (56.33 km/h) | 34.03 mph (54.76 km/h) |
| 40 mph (64.37 km/h) | 38.89 mph (62.59 km/h) |
| 45 mph (72.42 km/h) | 43.75 mph (70.41 km/h) |
| 50 mph (80.47 km/h) | 48.61 mph (78.23 km/h) |
| 55 mph (88.51 km/h) | 53.47 mph (86.06 km/h) |
| 60 mph (96.56 km/h) | 58.33 mph (93.88 km/h) |
| 65 mph (104.61 km/h) | 63.2 mph (101.7 km/h) |
| 70 mph (112.65 km/h) | 68.06 mph (109.53 km/h) |
| 75 mph (120.7 km/h) | 72.92 mph (117.35 km/h) |
| 80 mph (128.75 km/h) | 77.78 mph (125.17 km/h) |
| 85 mph (136.79 km/h) | 82.64 mph (133 km/h) |
| 90 mph (144.84 km/h) | 87.5 mph (140.82 km/h) |
| 95 mph (152.89 km/h) | 92.36 mph (148.64 km/h) |
| 100 mph (160.93 km/h) | 97.22 mph (156.47 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
