Alright smartypants, what does 'ET' actually stand for, and what does the 'J' refer to?
ET, whilst I'm not sure on the actual meaning of the letters themselves, is the offset of the wheel ie how close to the centre line of the alloy the mounting face is and the J is the width of the alloy itself.
It's not the fact that these weren't known, as everyone has to start somewhere, but a 30 second google would have probably provided the information far more quickly.
Edit: Also, I wasn't actually meaning it was that much of a fail, I just thought it was cool he was lord Zedd