So I'm having a new issue with creaking. When I go over small dips or bumps and im giving the car some brake, it freaks, but if I go over the same bumps without holding the brake pedal it doesn't (most of the time). What does this sound like the issue is?

 

Correction* it "creaks" not freaks. I don't think my suspension has the hormones of a teenage girl.

Anyone?

 

I would check your sway bar links and grease your sway bar bracket bushings first. Since you hear the noise more while braking you may want to check your compression rod bushing as well. May as well check your translink bushings while you are in there.

 

Lower control arm bushing? Try to spray with spray silicon, wd40 anything and drive and see if it makes the noise. I would do one at a time to locate the problem. YOu can do with on other bushings as well

 

I'm wondering if you aren't hearing ABS engagement in such a situation. With different tires loading and unloading in such a scenario, ABS can get quite busy (and a bit noisy). There have been some racetracks with very bumpy approaches in the braking area and I can hear the ABS pump working hard as I threshold brake over the bumps.

 

I have also noticed this as well in a few occasions, but to me didn't really sound like a creak. Either way something else to look into.

 

For the last 2 weeks my z has sounded like i'm driving on a creaky old wooden road. Turns out it was multiple things causing different squeaks/creaks. At the dealership today getting about $1500 of work done on the stock suspension. Will update later today what they replaced/fix as I can't remember the multiple issues.

Just got back... Replaced both front lower control arms and front upper right control arm. Also has a creak coming from the right front fender when flexed which is also now fixed.

 

I had this, sounded like a Victorian bed squeaking away, so I just re-lubed my sway bar bushings at the front.
Take them off, clean them properly and just ensure the grease is on the inside, fixed it for me.