I have a '16 BRZ with 50k miles. I noticed that the driver side wheels sit more flush with the fender while the passenger side is "sunk" into the fender. There seems to be ~15-20mm sunk on the rear passenger wheel and ~5-10mm sunk on the front rear passenger wheel (Front Driver Side: Flush | Rear Driver Side: Flush/1-5mm tuck). I previously had 17" advans and noticed that the back rear passenger wheel was lower than the other, but figured that the issue was just with the height on the coilovers (ST Suspension). After swapping to 18" kansei's recently, the difference became extremely noticeable. I found this
thread that says the camber may be uneven when lowering and LCA's would fix the problem. I also heard that the rear sub-frame could be slightly misaligned. However, I don't think either of these problems would cause such a big difference between the left and right. I've included some pictures, but they're not the best. Don't mind the missing mudflap, it disappeared like a magician after bringing it to the bodyshop.
Extra Context: I recently got the vehicle back from a bodyshop when I was hit on the rear driver side and supposedly everything was fixed with an alignment on the new wheels (no alignment paper was given)
Is there any reasoning behind the unevenness between the left and right sides and any solutions?