Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/65-12 | 145/75-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.4 (467.3) | 21.56 (547.7) | 3.17 (80.4) 17.2% |
| Width inches (mm) | 4.92 (125) | 5.71 (145) | 0.79 (20) 16% |
| Circum. inches (mm) | 57.8 (1468.07) | 67.74 (1720.65) | 9.94 (252.58) 17.2% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 4.28 (108.75) | 1.08 (27.5) 33.8% |
| Revolutions per mile (km) | 1096.23 (681.17) | 935.31 (581.17) | -160.92 (-99.99) -14.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.44 mph (37.72 km/h) |
| 25 mph (40.23 km/h) | 29.3 mph (47.16 km/h) |
| 30 mph (48.28 km/h) | 35.16 mph (56.59 km/h) |
| 35 mph (56.33 km/h) | 41.02 mph (66.02 km/h) |
| 40 mph (64.37 km/h) | 46.88 mph (75.45 km/h) |
| 45 mph (72.42 km/h) | 52.74 mph (84.88 km/h) |
| 50 mph (80.47 km/h) | 58.6 mph (94.31 km/h) |
| 55 mph (88.51 km/h) | 64.46 mph (103.74 km/h) |
| 60 mph (96.56 km/h) | 70.32 mph (113.17 km/h) |
| 65 mph (104.61 km/h) | 76.18 mph (122.61 km/h) |
| 70 mph (112.65 km/h) | 82.04 mph (132.04 km/h) |
| 75 mph (120.7 km/h) | 87.9 mph (141.47 km/h) |
| 80 mph (128.75 km/h) | 93.76 mph (150.9 km/h) |
| 85 mph (136.79 km/h) | 99.62 mph (160.33 km/h) |
| 90 mph (144.84 km/h) | 105.48 mph (169.76 km/h) |
| 95 mph (152.89 km/h) | 111.34 mph (179.19 km/h) |
| 100 mph (160.93 km/h) | 117.21 mph (188.62 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
