So my IS 250 with 130k miles the front left side is making squeaking sounds. I got it checked and the left strut mount is bad(Recently put Kyb struts in both front sides). My question is do I need to change both sides or I can do only 1 side. I'm also changing upper control arm on the driver side as its making tuk tuk sounds. Thx

 

yes, you can do one side for now. But pretty soon the other side might fail