Rear wheels jumping under heavy braking

Originally Posted by Rusty

I would say it's your settings for DD on your coil-overs. They're too soft. Add a click or 2 to the rebound.

Originally Posted by fryzia23

agree with Rusty, soft suspension with aggressive pads cause too much nose dive/weight transfer and rear end gets very loose. Adding more rear downforce would help. I had the same problem with swift springs matched with carbotech pads. Very scary on the street and basically undriveable on the track. Stock nismo wing. If the stiffer settings won't do it then you will need to upgrade to stiffer spring setup.