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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 225 (Tires & Wheels (Service Information)) >> Diagnosis And Testing >> Tire And Wheel Vibration >> Road Test

Road Test

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Road test vehicle on a smooth road for a least five miles to warm tires (remove any flat spots). Lightly place hands on steering wheel at the 10:00 and 2:00 positions while slowly sweeping up and down from 90 to 110 km/h (55 to 70 mph) where legal speed limits allow.

Observe the steering wheel for:

  1. Visual Nibble (oscillation: clockwise/counterclockwise, usually due to tire imbalance)
  2. Visual Buzziness (high frequency, rapid vibration up and down)

To rule out vibrations due to brakes or powertrain:

  1. Lightly apply brakes at speed; if vibration occurs or is enhanced, vibration is likely due to causes other than tire and wheel assemblies.
  2. Shift transmission into neutral while vibration is occurring; if vibration is eliminated, vibration is likely due to causes other than tire and wheel assemblies.

For brake vibrations, refer to DIAGNOSIS AND TESTING .

For powertrain vibrations, refer to DIFFERENTIAL & DRIVELINE article.

For tire and wheel assembly vibrations, continue with this diagnosis and testing procedure.

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