I have the AVS with 5k on them and no balancing yet. And I have cupped tire noise also. Goes with the grippy tires. I daily drive and never seem to have time to balance them.
Can't hear them with the top down though
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2004 Boxster - Carmon Red/ Black-SOLD
18" Carrera Lt, Painted to match roll bars, PnP Rear Speakers, Sports Tailpipe
2004 Tonka Truck H2
05 S - looking...
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