Hello, I have a 18 p5 and have noticed that when at 30+ mph if I go to stop fast “applying the brakes”the transmission feels like it it trying to downshift and makes s hell of a clatter until stopped . I noticed yesterday on a heavy decline in 1st applied the brakes and same chatter. I got about 400 miles on her. Anyone else noticed this? Sure would like to know if it’s just my girl or others have the same issue? Thank in advance