I suspect that the hard braking at 5MPH when wet is worse on some cars that others. My 2015 is practically schizophrenic between dry and wet. Normal gentle regen braking doesn't work when wet. The car is yanked to a stop at 5MPH if there is a light mist around. If you are driving after a rain, you might get hard braking or normal gentle braking, depending on the amount of moisture around the wheels. Those who talk about easing up on the brake as you approach a stop are right when it comes to normal braking. The problem is that the braking characteristics change unpredictably. I guess I can deal with it as long as I drive in either dry weather or wet weather, but the in between conditions make driving an aggrevation. I appreciate people posting their experience so I know it is not just my car that acts this way. I can only hope that someone has some success with a solution, such as a change to a certain kind of brake pad, or a reprogrammed onboard computer.