Just a brief note of gratitude. I've had my SC 430 for three years, and suddenly, last month, it started veering to the right at low speeds, and, as I described it to the Lexus mechanics, felt like the road was driving the car (and not the reverse). They had no idea what I was talking about. The problem persisted to the point where I began to question my own, well, you know, sanity. Then, one lucky google and I found your post. This time the Lexus mechanic, after I read him your emails, seemed surprisingly familiar with the problem (something about tire size, and 'toe out'), and while he was willing to guarantee nothing (thanks a lot), I'm getting the four wheel alignment done tomorrow.
Here's hoping it works.
Thanks again.