www.discounttiredirect.com
free shipping, and intaller locater (not free install, but cheap)
but you're bound to be able to find a little mom and pop place that'll throw some tires onto rims and balance them for 10 bucks or so.... fortunately for me there is a discount tire about 3 miles from my house, I like to drop and make them check my air for free.
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btw, if Giorgio Giugiaro drove an SVX, I bet it would be on Pirelli