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Speedometer Test

Ensure tire pressure is at proper level. Using a reliable speedometer tester, compare reading of vehicle to that of speedometer tester. See SPEEDOMETER ALLOWABLE VARIATION  chart. If the speedometer reading does not fall between standard variation range, replace speedometer.

SPEEDOMETER ALLOWABLE VARIATION

Speed Displayed MPH (km/h) Allowable Variation +/- MPH (km/h)
20 (32) +/- 1.5 (2.4)
40 (64) +/- 1.5 (2.4)
60 (97) +/- 1.5 (2.4)
80 (129) +/- 2.0 (3.2)
Over 100 (161) +/- 2.5 (4.2)