I bought some Michelin Premier A/S v-rated a few months ago. I get this vibration at about 60-65 that's really prominent, can feel it in the seat and in the floor and in my body. It' basically just in that speed range. The dealership said they balanced the tires and wheels and that it was all good to go, so it's not a balance issue, they say. But they are also saying maybe it's a bent rim. Well, I just want to figure this out. I don't think that I have a bent rim, because I had no issues before I bought the new tires. Good tires, just the vibration...not sure what's going on. Any ideas? This is a 2009 2.3L Mazda3.