Do our cars come with shims from the factory in order to alighn the rear?
No
You shouldnt need them unless you hit something
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Or you want to make any adjustment to the rear at all...
No they don't, but that does not mean they are not needed. First time I lowered my car took it for a aligment and it needed shims for the rear. Not for Camber issues, but for Toe (I never got them).
FU Tuning