Wet Road Stability
 

I just bought a 2006 A4 Quattro Automatic with Michelin Pilot EXALTO 235 45 R17 tires. This is the first Quattro I've had that feels unstable on wet roads. It feels like I might go into a spin-out at 60 and sometimes going as slow as 40 mph. I had the Audi dealer look at and found two of the tires were rotating the wrong direction. They rotated the two tires but that didn't correct the problem. Do I need to get different tires for wet and snow or is there something else to look at?

Is the car properly aligned?