So OP should scour though 50 pages to update the first post? 99% of the information is in the first post.
Well it is his post, so no one else can do it, and I imagine he is following his own thread. If it is done more or less as folks add information they would not have to scour all 50 pages and it would be relatively easy to do. It was sort of implied early on in the thread "Let us know if they fit and I'll update the wheel list." And currently it is far from 99% of the information.
Otherwise why bother posting it on this thread where the information just gets buried? So if they are not going to update the original post, from an information search perspective it would be a lot easier to find if everyone just made their own post with new information, way it is easier for others to find. Title it Macan caliper upgrade with XXXXX wheel fitment or whatever.
having it all in one spot is nice, but not when it gets above a certain size.
As someone that has read through hundreds of pages of big threads and thought there has to be a better way to do this, and also has a couple of big threads of my own, (not here, on VWvortex) I update the OP for the same reason. It does not take a lot of effort and is just a nice thing to do for others.