My other option is to get a set of Blizzak LM-25s or an "ultra high performance all season tire" such as the Goodyear Eagle F1 or the Michelin Pilot A/S (which I know Boomer got and likes) in the same size as the OEM tires (255/35-19) and have the dealer mount them on the OEM rims for when I pick the car up. (This route with the Blizzaks is what one of the salesmen at the dealership who drives an S5 took.) One concern I have with the Blizzaks is that a friend of mine who had them on his Mustang told me he got lousy tread life with them and found, when he had to replace a single tire with a new Blizzak, that it threw off the handling of the car to the point that he didn't feel safe driving it.
Suggestions? Going with the 18 inchers (tires, road hazard, wheels and TPMS, when they show up) sans installation costs will run me about $1,700. Going with the Blizzaks or Pilots will be about $1,200 almost all in (again, sans installation, but I won't need to buy a second set of TPMS). The Goodyears are about $1,000. I didn't have that much hair left to begin with, but I'm pulling out what little I have left trying to make this decision. HELP!