Regal V6-3.8L SC VIN 1 (1998)
Alignment: Testing and Inspection
Tire Wear Diagnosis
Inspect for the following conditions:
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Inspect for misaligned wheels.
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Inspect for excessive toe or camber.
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Inspect for broken springs.
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Inspect for sagging springs.
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Inspect for mispositioned springs.
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Inspect for incorrect tire balance.
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Inspect for wear or damage to the strut.
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Inspect for wear or damage to the shock absorbers.
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Inspect for signs of vehicle abuse.
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Inspect for uneven or excessive loading of the vehicle.
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Inspect for incorrect tire pressure.
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Inspect for properly rotated tires.
The original equipment tires have built-in tread wear indicators to show when tires need replacement. These indicators appear as 12.7 mm (1/2 in) wide
bands when the tire tread depth becomes 1.6 mm (1/16 in). When the indicators appear in 2 or more grooves at three locations tire replacement is
recommended.
The following conditions may cause irregular and premature tire wear:
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Incorrect inflation pressures
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Lack of tire rotation
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Driving habits
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Wheel alignment
Rotate the tires if the following conditions are noted:
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When the front tire wear is different from the rear tire wear.
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When uneven wear exists across the tread of any tire.
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When the left front and the right front tire wear is unequal.
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When the left rear and right rear tire wear is unequal.
Check wheel alignment if the following conditions are noted:
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When the left and the right front tire wear is unequal.
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When the rear is uneven across the tread of any front tire.
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When the front tire treads have a scuffed appearance with feather edges on one side of tread ribs or blocks.
