I got in late on this one but read everyones responses. Junk & Ms. Xtreme, sure glad to have you 2 on the site:thumbsup::thumbsup:
Your expertise and insight, along with your abundant willingness to help those of the fold that need it, really make the site, and
YOU, stand out:icon_cheers:
Might I suggest since you're right there in good old Pinella Park, that you contact John @ Auto XTC:thumbsup: Great folks and extremely knowledgeable.
If they can't do anything with it, thern I'll guarantee you they can refer you to someone who can:thumbsup:
They refered me to Mikes Body shop for some frame issues and Mike himself suggested the Goodyear dealer not to far away for alignment issues. Seems pretty confident in thier work.
I don't know if that's who Auto XTC will recommend, but it's a start and they're local to you. Besides, if it's a warranty issue with the Goodyear tire, who better to handle it?
There's also Mike from "The Corvette Shop" here in Tampa (on N. Dale Mabry Highway just south of the Interstate). He has a complete frame and alignment shop. He specializes in rebuilt vettes and has built many from totals. He and his guys seem to know what they're doing:thumbsup:
On a final note, from my years back (many years back-when I had hair and a 34 inch waist:lmao

I used to do alignments, suspensions and such.
I found in many cases that a
bad belt in a tire could cause the problems you mention.
Try switching the tires from side to side, front first then rear (I assume you can do this with these?)
Also, if they have a truing maching, or high speed balancer, have them place the tire/rim combo on same and run that mofo up to speed. Might see a wheel/tire issue at that point.
Hope some of this helps and again, GMJUNKIE and MS.XTREME...U da man! Uh, I mean woman!...I mean....ah hell! You both know what I mean:thumbsup::thumbsup::icon_cheers::icon_cheers::icon_cheers: