Not sure why I haven’t posted here before or anyone else for that matter but here is my "trouble".
Name: William Duvall
Make: 2004 Subaru Impreza WRX STi
Mileage: ~19,000 miles
Time Out Of Use: none
Scary Moments Of Use: Dozens (I don't have an exact count, sorry)
Problem And Likely Cause: Weak hubs that are flexing and causing knockback
Modifications: TWR 2-piece slotted front rotors for last 9 months which are the same size as stock (mfr claimed) and I still have the stock front rotors.
Submitted For Warranty Work (Yes/No): No
Reason Given For Denial: n/a
Your Story: Severe, my non-expert assessment, knockback after sharp and/or high speed turn. This happens mostly on exit ramps, on and off, and U-turns. After a turn that causes this issue the car has virtually no braking ability until you pump the brake pedal to push the brake pads back to the rotors. I've had to make a hard stop in traffic before when the knockback occurred, unknown to me, and had no braking ability so i had to swerve off the road and upon next attempt to brake I was able to come to a safe stop, as safe as can be expected off the road.