I know that some of you have already been down this road and now that it's my turn I'm looking to your experience for advice. As the subject line says I've got an 06 Sonata LX with the 17 inch wheels.
My personal impression of the OEM tires:
The Michelin's have worn fairly well for a low-profile tire (almost 39K miles and they still come up to Lincoln's forehead in the old standby test), but the ride is pretty harsh and wet-weather traction is sketchy at best and very prone to hydroplane. On dry pavement they handle well especially on spirited driving in the mountains and curves :-)
I would definitely like to get something that handles wet weather better than the Michelins, and if you've switched out to something (still in a 17) that isn't quite as harsh a ride as the OEM tires, I'd like to know about it. I would prefer to stick with a tire rated to last in the 40-50K mile range as I drive this car for work and wouldn't want to be replacing them every year!
Thanks KW