This is a pass just outside Magaliesburg. I am given to believe that it is nothing spectacular, just a nice drive. Anybody been, what can I expect give the current wet conditions? I see there is a video on the net, will check that out.
I assume you're talking about Breedts Nek pass - between Magaliesberg and Buffelspoort. If so, yes.
It's one of our regular day-trip routes. We normally take the dirt roads from "Plaas Se Gat" in Harties, all the way until Breedts Nek. Stop at the summit. Drive to Buffelspoort dam. Braai and then head back the same way. We stop for a beer at "Plaas se Gat" on the way back. :)
As for conditions in the rain: I went up on the 2nd of January. There were very heavy rains at the time - including a massive storm which took out all the campers at Buffelspoort Dam the day before (the video was almost viral-like on FaceBook).
It's not difficult. You often even see platkarre driving up. The pass is not in great condition, although it's no sweat for a Patrol. It's easier travelling South -> North than North -> South. Reason for this is that the very bad bit of the pass is on the Northern side. As I said though, with a Patrol it's a breeze. Also, the stony-type ground means that the pass does not really get particularly muddy - even after heavy rain. There might be a few more gullies washed into it after heavy rain. But this is not something I'd worry about.
A few photos from some of our trips up there:
I've also included the GPX file for the pass proper - just in case anyone is interested.