Update, Ronnie is correct in that I lifted up one side at a time and spun the wheel from the outside. Didn't hear anything. No grinding, wheel seemed to move freely.

I can't imagine by lifting the entire rear both sides. Having someone else spin the wheel and then placing my hand on the cv by the trans or the wheel the result would be different. Short of a stethoscope and a hunch its seems to be a problem of subtle nature .ALthough its loud in the cabin, not so subtle.

A more experience person should look at it as opposed to me throwing parts at it.

Does anyone have an idea what it would cost to have a mechanic replace the wheel bearings, or do they just replace the cv's as well because they are there?

I am going to try the feel thing as ROnnie suggests this weekend before I make a final decision as to how to proceed

As far as the sound that some people have asked about it not a grinding sound. Its just very loud in the cabin as my original post stated. ALso the sound happens at 30 to 50 mph. Maybe this is why spinning the wheel by hand is not diagnostic. WIth the clutch out it sound like the wheels are the source

Everyones final thoughts would be appreciated

RichSmileWavy stuck on the sidelines for now:Dand pissed

Ron Ac fully installed was looking to charge it soon!!!!!!!!!!!!!!

You never know. You are probably correct if there is a genuine mechanical issue. I just like to get up in there.

Another thought, rub you hands around the outside of the tires and check for anything that resembles cupping. That can make lots of roaring noise.

I had a significant noise coming from the rear end of the car a few years ago. I replaced the bearings, noise still there. I replaced the axles/CV joints, noise still there. I replaced the tires (that looked totally normal) noise gone!!

you probably wont hear or feel it spinning it by hand. you need to run the engine and put it in gear. even then it will be subtle. you really have to just know what a bad bearing sounds like and what a CV sounds like.

driving the car the bearing is going to be a "roaring" sound. CV's usually click or pop. again, never heard a bad 911 CV.

putting it on stands and checking really just verifies which side and the fact it is not a tire.

just went thru this with my 930. left side was bad but did both.
I also did my CV's before this. I had one CV that had pitting, no sounds from it and I certainly did not suspect it was a CV,.

if you are still in doubt, take a mechanic for a ride.

Update
 

OK here it is the prize goes to Jesse 16 and Charwood77.

Got a call from the local Porsche guy near me who's shop I pulled up to must have had 9 or 10 Porsche' inside. Looked like I was at the right place.
Left the car and he did a complete look over. Quote"The left rear bearing is screaming and it also appears a couple of cv boots are broken,

Here is where it gets interesting. He could replace the (1) outer bearing, i guess there is two? on one wheel for $600. The boots on the current axle could be replaced for another $300 without the guarantee that once he looks at the cv that there might not be a a problem and its not a simple boot replacement. Car has 150 k on it. and I have no history prior to 100K miles

Hmmm. Thinking about what charwood said in that the other side might go in 500 miles or so. For $600 for 2 new cv's upgrade axles and 300 for all bearings for both sides and my time I thinking its a better way to go
Am I wrong here?

Also they said that the brake pads were getting low just wondering did them at 40,000k miles ago is that normal wear rate?

Looking forward to everyones thoughts and bye the way who has a spare wheel bearing puller set up that I can borrow or rent?SmileWavy

If you can afford it, just get everything done. It's nice to keep both sides the same.

replace both and since you're not DIY ing you can likely sell the two split boot axles on Pelican to help a little. You could rebuild both for cheap but that's a different level of effort, mess and trust in old car parts. Sounds like you'll be back to smooth running soon.

Trying to rent or borrow the Sir tool hub puller thing/ or the other tool. If anyone can do this please pm me. To Rusnak, your mailbox if full and I can't send a message to you.

Just trying to get in and out without the drama during the repair appreciate anyone who can help