Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-12 | 145/45-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.8 (502.8) | 17.14 (435.3) | -2.66 (-67.5) -13.4% |
| Width inches (mm) | 6.5 (165) | 5.71 (145) | -0.79 (-20) -12.1% |
| Circum. inches (mm) | 62.19 (1579.59) | 53.84 (1367.54) | -8.35 (-212.06) -13.4% |
| Sidewall Height inches (mm) | 3.9 (99) | 2.57 (65.25) | -1.33 (-33.75) -34.1% |
| Revolutions per mile (km) | 1018.83 (633.07) | 1176.82 (731.24) | 157.99 (98.17) 15.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.32 mph (27.87 km/h) |
| 25 mph (40.23 km/h) | 21.64 mph (34.83 km/h) |
| 30 mph (48.28 km/h) | 25.97 mph (41.8 km/h) |
| 35 mph (56.33 km/h) | 30.3 mph (48.77 km/h) |
| 40 mph (64.37 km/h) | 34.63 mph (55.73 km/h) |
| 45 mph (72.42 km/h) | 38.96 mph (62.7 km/h) |
| 50 mph (80.47 km/h) | 43.29 mph (69.66 km/h) |
| 55 mph (88.51 km/h) | 47.62 mph (76.63 km/h) |
| 60 mph (96.56 km/h) | 51.95 mph (83.6 km/h) |
| 65 mph (104.61 km/h) | 56.27 mph (90.56 km/h) |
| 70 mph (112.65 km/h) | 60.6 mph (97.53 km/h) |
| 75 mph (120.7 km/h) | 64.93 mph (104.5 km/h) |
| 80 mph (128.75 km/h) | 69.26 mph (111.46 km/h) |
| 85 mph (136.79 km/h) | 73.59 mph (118.43 km/h) |
| 90 mph (144.84 km/h) | 77.92 mph (125.4 km/h) |
| 95 mph (152.89 km/h) | 82.25 mph (132.36 km/h) |
| 100 mph (160.93 km/h) | 86.58 mph (139.33 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
