Slight Suspension Wiggle/Shimmer in Corners
 

When taking a corner or curve hard I notice a slight wiggle or shimmer? in the suspension mid corner. I'm not sure if I'm feeling my tires roll over on the sidewalls (they are Pilot SS at 35psi), my suspension bushings or something else. This is street driving so I'm not pushing the car much beyond 6-7 10ths.

My bushings are stock save the front LCA bushing which is an upgraded whiteline bushing for some additional caster. Would that be causing the issue since its different than the rear LCA bushing?

Would upgraded sway bars help with this situation? I've been considering an upgrade.

Hmm. Imho rear subframe bushings might help more then sway bars for this case/wished result of less slack/movement. I might be totally wrong, so wait for someone more competent in suspension to answer :)

Probably tire rolling over, MPSS have the squishiest of sidewalls.

Try bringing the tires up a few PSI and see if that changes anything.