Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/65-12 | 145/55-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.4 (467.3) | 19.28 (489.7) | 0.88 (22.4) 4.8% |
| Width inches (mm) | 4.92 (125) | 5.71 (145) | 0.79 (20) 16% |
| Circum. inches (mm) | 57.8 (1468.07) | 60.57 (1538.44) | 2.77 (70.37) 4.8% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 3.14 (79.75) | -0.06 (-1.5) -1.8% |
| Revolutions per mile (km) | 1096.23 (681.17) | 1046.09 (650.01) | -50.14 (-31.16) -4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.96 mph (33.73 km/h) |
| 25 mph (40.23 km/h) | 26.2 mph (42.16 km/h) |
| 30 mph (48.28 km/h) | 31.44 mph (50.59 km/h) |
| 35 mph (56.33 km/h) | 36.68 mph (59.03 km/h) |
| 40 mph (64.37 km/h) | 41.92 mph (67.46 km/h) |
| 45 mph (72.42 km/h) | 47.16 mph (75.89 km/h) |
| 50 mph (80.47 km/h) | 52.4 mph (84.32 km/h) |
| 55 mph (88.51 km/h) | 57.64 mph (92.76 km/h) |
| 60 mph (96.56 km/h) | 62.88 mph (101.19 km/h) |
| 65 mph (104.61 km/h) | 68.12 mph (109.62 km/h) |
| 70 mph (112.65 km/h) | 73.36 mph (118.05 km/h) |
| 75 mph (120.7 km/h) | 78.6 mph (126.49 km/h) |
| 80 mph (128.75 km/h) | 83.83 mph (134.92 km/h) |
| 85 mph (136.79 km/h) | 89.07 mph (143.35 km/h) |
| 90 mph (144.84 km/h) | 94.31 mph (151.78 km/h) |
| 95 mph (152.89 km/h) | 99.55 mph (160.22 km/h) |
| 100 mph (160.93 km/h) | 104.79 mph (168.65 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
