[tnoice]

when my yokohama's wear out from a much enjoyable season of autocrossing and daily driving, I am going to buy the Bridgestone Potenza RE-11's. I have had similar tires in the past and have really liked them.

As far as oil, I use mobil 1, and have not had a problem. Now, that being said, I do change the oil FAR more frequently than recommended. About every 5,000 miles or once a year.