if the car is not giving any vibration than no need to change your rims waisa bhi these alignment guys are always saying such things like hisa kamzoor hai rim main jump hai and blah blah aur worst case is sir app ke gari ke left side 1 sotar pecha hai hehe.
If its running fine now no need to replace anything normaly rim lose shape when you drive your car with inproper tyre pressure and on very bad roads so always use proper tyre pressure 28 PSI and when ever you see bad road slow down.