Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 145/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 19.99 (507.8) | 0.85 (21.5) 4.4% |
| Width inches (mm) | 6.5 (165) | 5.71 (145) | -0.79 (-20) -12.1% |
| Circum. inches (mm) | 60.15 (1527.76) | 62.81 (1595.3) | 2.66 (67.54) 4.4% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4 (101.5) | 0.42 (10.75) 11.8% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1008.8 (626.84) | -44.6 (-27.71) -4.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.88 mph (33.61 km/h) |
| 25 mph (40.23 km/h) | 26.11 mph (42.01 km/h) |
| 30 mph (48.28 km/h) | 31.33 mph (50.41 km/h) |
| 35 mph (56.33 km/h) | 36.55 mph (58.82 km/h) |
| 40 mph (64.37 km/h) | 41.77 mph (67.22 km/h) |
| 45 mph (72.42 km/h) | 46.99 mph (75.62 km/h) |
| 50 mph (80.47 km/h) | 52.21 mph (84.02 km/h) |
| 55 mph (88.51 km/h) | 57.43 mph (92.43 km/h) |
| 60 mph (96.56 km/h) | 62.65 mph (100.83 km/h) |
| 65 mph (104.61 km/h) | 67.87 mph (109.23 km/h) |
| 70 mph (112.65 km/h) | 73.09 mph (117.63 km/h) |
| 75 mph (120.7 km/h) | 78.32 mph (126.04 km/h) |
| 80 mph (128.75 km/h) | 83.54 mph (134.44 km/h) |
| 85 mph (136.79 km/h) | 88.76 mph (142.84 km/h) |
| 90 mph (144.84 km/h) | 93.98 mph (151.24 km/h) |
| 95 mph (152.89 km/h) | 99.2 mph (159.65 km/h) |
| 100 mph (160.93 km/h) | 104.42 mph (168.05 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
