My car is having trouble adapting

Okay, so I just moved from Orlando, FL to San Diego, CA and I am noticing some annoying differences while driving, the biggest problem being the concrete road surface on all of the freeways around here. Most roads in Florida are asphalt and do not have the wonderful grooves that the roads in CA have. These grooves are causing my Prius to feel like a shuttle during re-entry when I drive on the freeway. I suspect the cause might be my POS tires (warrior brand, made in china, really cheap, came new with the car). I realized this during a really scary loss of traction on Mira Mesa Blvd. this afternoon (idiot in front cut me off, jerk in back was 6 in away from my bumper, I had to swerve into the right lane in front of a Camry going way too fast and had to gun the engine to avoid being hit by three cars). So my first question would be, can anyone recommend a decent set of tires that will not tramline on the freeway and won't set off traction control during rapid acceleration?

Second question.
What exactly do I need to do/have to transfer my Florida plates and license to California? The website is a little vague on the details so some firsthand advice would be greatly appreciated.

BTW, driving in San Diego is sooo much fun, especially the city traffic.
(I say that with as much sarcasm as humanly possible.)

 

<div class='quotetop'>QUOTE(ACORNBLUES @ Aug 24 2007, 12:04 AM) [snapback]501383[/snapback]</div>

My MPG was actually going up (I assume because of the hills) before today, but I dropped from 48 mpg to 43 after the gun it and slam the brakes session in Mira Mesa. You could never glide in FL unless you had a nice long freeway exit ramp.

 

<div class='quotetop'>QUOTE(Godiva @ Aug 23 2007, 09:55 PM) [snapback]501409[/snapback]</div>

I've thought about the BT plate, but I doubt that one piece of steel could prevent the sort of violent shaking I get on the freeway (usually at its worst between the 8/805 interchange and the 805/5 interchange going north).

I religiously keep my tires at 40/38. I know that most people on this board do 42/40, but those kind of pressures are too close for comfort to the maximum rating of my current tires.

(Woo, 100th post!)

 

<div class='quotetop'>QUOTE(Godiva @ Aug 23 2007, 10:20 PM) [snapback]501424[/snapback]</div>

I'm not sure you would want me test driving your car (young driver, college student, and not yet fully adjusted to CA driving). I think that I'll replace the crummy tires with some decent Goodyears simply because of the traction issues. If that doesn't fix the tramlining as well, I guess I have to try the BT plate. I should have replaced the stock plate when I had the car up on the trailer during the escape from Florida, but that would have made too much sense.