My new car -- not a Subaru, sorry -- came with Pirelli P-Zeros and the thing that bothers me the most about them is the tracking. Drives me nuts. Every weekday I drive across this piece of road where old lane dividers were gouged out and it pulls my car. Incredibly annoying. Moreso than the noise (which honestly isn't too bad despite the bad reviews over at TireRack), but I'd almost like to trade that tracking and pay with it with more noise.