Charger SRT Hellcat
From the factory, my front camber was an even almost -2 degrees up front and -0.5/-2 in the rear. I've replaced the front control arms with SPC adjustable arms set to -1 deg and have had no issues. In the rear I went with BMR UCA112 (on-car adjustable control arms) set to -0.5 deg. Everything was fine for a few thousand miles but I started hearing a creaking/squeaking/crunching type of noise when pulling in and out of my driveway. The solution from BMR was to put in adjustable upper trailing arms (UTA112) for fear that the factory bushings may be binding up. After installing the UTAs, I noticed when the rear suspension rebounds the rear end lurches to the right. Think of an overpass transition where the pavement isn't completely level, or maybe a dip where a drainage culvert runs under the road. The front compresses and rebounds straight, but the rear compresses straight and the rebound kicks the rear to the side. At high speed (80+) the effect is significant enough to make your stomach get that weird 'floating' feeling. I felt that if I were to hit a similar bump at very high speed I might end up losing control all together. Thinking that there may be a problem with the UTAs, I pulled them off and put the stock arms back on. The sideways motion on rebound is DRAMATICALLY reduced, but not completely gone. BMR says they've never heard of this problem before and their arms are designed to eliminate the flex that causes this type of motion. Does anyone have an idea what might be causing this?