Wow, thanks for the replies guys. I did get an alignment after I got the new wheels but maybe they did a bad job?
I guess it could be poor alignment but the car rides just fine - sounds like you guys are having a lot better luck than me. Anyhow I think probably in about a week I'll switch to the Kumho's and see how they fair, probably get another alignment too... hopefully this time they will last a bit longer..
what a car...