The weight of the 17" wheels seems to more than offset the improved cornering in most everyday situations

Not if you convince your SO to mortgage the house to buy something like some SSR Comps!

My goal is more modest, somethink like some (Volk copy) Rota Attacks , maybe about the same weight as my OE 16s. Just for May-September, I'll let you know if I notice the difference, shorter sidewalls and all. I *really* want 'em cause they look cooler in 17" and the 5 spokers are easier to clean (than the OE split 5-spokers).
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Jim


'Tis the exceptional fellow who lies awake at night thinking of his successes.