It may or not be relevant but have noticed on my wire wheeled Roadster in heavy rain at motorway speeds, delayed braking effort and sometimes pulling to one side or the other until water cleared from disc surface by a dab or two. Was told the wires act like a fan at speed blowing water onto discs.
Yep, agreed, used to have the same issue with previous ww Mogs, I once got caught in heavy rain on the A38 with nowhere to stop, no sidescreens made it easy to observe and the volume of water coming out from within the spoked area from the front wheels was like a jetwash, I also used to get much worse corrosion on the inner face of the discs
Current Mog has Plus 8 style alloys and very different compared to above (although I suspect brake cooling is not as good)
