I just got some Falken Ziex 205/50/15's when i was driving home today i moved the wheel back and forth and my car seemed to "wag" What could this be or is it just how low profile wheels are?? This is the first time driving a car with low profiles.

 

new tires will be slippery for the first 500miles or so. this is because the release compound they use to make the tread come out of the mould easier.

also check your tire pressure.

 

The steering *seems* loose, huh? That's normal, you're just used to the crappy Firestones.