Hrmmm....weird question I think. I've never took those temps off my old B13 racecar, but I never had a problem with my set-up either and I've run Sebring, but not Homestead. I just ran new front OEM Nissan bearings every 3-ish events. Some say getting rid of that factory grease and repacking it with some good stuff like Redline, etc. helps a lot, but I think the best set-up is factory bearings, which are of course steel, bolted to aluminum wheels which will soak up some heat from the hubs and disipate it to the atmosphere. This is a super common set-up, of course. If all else fails, that's what ducting is for!