"Weather report and other stuff" observations of the WTC900 on hard. Rain seems less common than the 30 minute version, 1 in 5 for me. When it does rain one AI, usually the leader, for me it was the long tail F1, will fly through the wet on slicks while the rest of the field piles up at every opportunity
. The GT one is quite hard to beat with a GT one. The best strategy seems to be catch him early when he's stuck in traffic, he has very good pace when he clears traffic, I've seen him do a fast lap of 3:31. The CRB is very tricky to get, definitely a fun challenge. I haven't gotten it yet, because I still need to punt and pin the GT one every time I catch it.... You know, reasons.