Variance Test
Using a speedometer tester, test speedometer for allowable indication error (variance) and check operation of odometer. Check speedometer for fluctuation and/or abnormal noise. See SPEEDOMETER ALLOWABLE VARIATION table for tachometer allowable error.
SPEEDOMETER ALLOWABLE VARIATION
| Standard Indication | Allowable Range |
|---|---|
| 30 MPH | 30-32 MPH |
| 60 MPH | 60-63 MPH |
| 90 MPH | 90-94.5 MPH |