Doesn't matter how good the tire is, the larger factor is the amount of rain on the road! By the look of it, it looks like there was a lot of water on the road.
Also when driving in rain, IMO I feel that driving left or right of the middle part of the lane helps. The reason being, because 80% of the cars drive in the middle of lane, you get a little indentation in the road where the cars' tires have been driving on and when it is raining water accumulates in the indentation which increases your chance of hydroplaning.
^It might be common sense, but just thought I would share.
M3.e90 JZB blacked out.coded