Tire wear, what's causing this! ? ?

At some point, very soon,youre going to have to make some hard decisions.Running those SS springs with matching shocks,on the street,at elevated ride height, is not for everyone.Youre going to need to focus.
-The way I see it, there are at least 5 set-ups; 1)Tracks with corners,2)Tracks with no corners, 3)Weekend bomber, 4)Street cruiser, and 5)Daily driver. There may be a little overlap here and there, for those willing to compromise. You need to select a category and concentrate(focus) your time,money, and efforts in it. Other wise your spare parts pile will grow and grow and grow.And disappointment or frustration could set in.
-Once the SSs are on there in stock form, your focus has been narrowed to categories 2 and 3;the straight-line world. If de-arched, maybe 1, and MAYBE 4.Surely not 5.
-For a street car,with the rear at the nosebleed ride height, and superstiff, you will need at least 10 inches of rubber on the road out back to keep the back, in the back,or else cornering will be a challenge. And you will need at least 1 inch T-bars, and a 1 inch or better front sway-bar.So if your pockets are deep this will turn into a sorta sweet ride. At least it will look great; parked or in a parade. It will not corner all that well.
-As a track car it could 60 ft pretty good,with a little tuning.
-As a daily driver, it will rattle your bones on any but the smoothest roads.
-I see that youre pretty excited about that A-body, as was I when I began my A-project those many years ago. And they can excel in any one category that you chose.With careful selection of parts a little overlap of categories is possible.