On Saturday we had some nasty weather here in the North Jersey / NYC area. I had to go out and get chinese food (because the delivery time was 45 mins due to the weather).

Since it was very slippery, I tried to keep it under 30mph... but everytime I stepped on the gas pedal, the car would fish-tail out to the right. This even happened on flat road surfaces. The car literally felt like it wanted to go sideways ALL THE TIME. I had to constantly keep correcting this with the steering.

I even turned off ESP... but that was worse.

- I'm tuned with APR 1+ ... I turned that off and set ECU to stock.
- I have 225/45-17 BLIZZAK tires on OEM 5 spoke alloys.
- My last alignment was July 2008.

Has anyone experienced this?

What could be my car's problem?