I've never been to SFNE, so I can't tell you what has been there and what hasn't, though I do know that the other big new Intamin coasters I have ridden (Millennium Force and the S:ROS at Darien Lake) do have advancing tires on the brake run.
If you visit
my site there is a page listed under the picture of a Runaway Train wheel assembly entitled, "What happened to Superman: Ride of Steel". That page gives some unconfirmed speculation on how the incident happened, along with a copy of the official press release that came from the park after the incident.
Of all the incidents that I can think of, that is the only incident I can think of where the park very quickly explained the cause of the incident and the steps taken to correct the situation, in great detail, almost immediately after the incident. I was pleased and surprised and I think the credibility of other parks might improve a bit if they would do the same.
--Dave Althoff, Jr.