Speedometer Calibration Test
Test drive vehicle and time number of seconds taken to travel one measured mile at an indicated 10, 30 and 60 MPH. Compare results with specifications. See SPEEDOMETER CALIBRATION SPECIFICATIONS table. Calculate actual vehicle speed using the following formula: 3600 divided by seconds equals MPH.
SPEEDOMETER CALIBRATION SPECIFICATIONS
| Indicated Speed | Seconds | Actual Speed |
|---|---|---|
| 10 | 275-345 | 13.1-10.4 |
| 30 | 115-125 | 31.3-28.8 |
| 60 | 57-62 | 63.2-58.1 |