Send me a pm with a fax # or address.The setting probibly was to spec. as the dealer stated . The problem is the GM spec. I can send you the spec that will give you the max tire life (35,000 plus) .Then you need to find a shop that can do it.
Anyone else having the problem of cupping or short tire life feel free to pm me.
word of caution :if you spend your weekends at the track this hinders your top end performance.
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