Tires being noisy doesn't necessarily mean that you need an alignment. It depends on what you mean by noisy.
Tires that wear unevenly, or have feathered edges can be signs of alignment problems.
Have a technician look at the tires and tell you if it's the tires or alignment. Either way, you need to put good tires with the proper tire pressure on the vehicle before you have it aligned, otherwise the alignment will not be right.
〉 Answered on Jan 9th, 2007 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines
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