ljmartyre

I’ve been chasing this noise for a few weeks now.
Removed pretty much every panel behind the seats and it’s unchanged. So I’m ruling out interior bits.

997.2 GT3

Rear of car:
Stock coilovers
Terret sway bar links
58k miles

It just started one day, never worse or better but always very consistent.
Low speeds you only hear it on bumps, but on the highway it’s always prevalent.

My initial thoughts were a bad strut mount.
Furthermore, I noticed when on the lift yesterday that I can physically, but very slightly, compress the damper by pressing up on the wheel with a good amount of force. But not possible on the other side.

I don’t have any record of the shocks ever having been replaced, so it’s likely that one’s just the first to go but wanted to check in and see if anyone has experienced a similar sound.

cds4402

Bad strut mount. Mine sounded exactly the same when I had them replaced last year.

ljmartyre

Thought as much. Thank you!

ljmartyre

So after removing pretty much every rear panel, I finally figured it out.

https://rennlist.com/forums/997-gt2-...k-7-1-gt3.html

The sound @f50nut had was almost identical.
Put the car up, nothing out of place. Not the issue.

Turns out it’s not the rear strut mounts either. Funny that a few people also suggested it sounded identical. But going to do those anyways since I just ordered them.

The issue was the clip on the rear bumper-to-body, behind the passenger wheel, gave out.
So even though the screw was tight the clip didn’t sit in the metal and instead wiggled around. Can’t replicate the sound it makes from the cars vibration on the road but replaced the nut and screw, drove 150 miles and not a peep.

Video attached

Occam’s Razor at it’s finest.