We've seen quite a few of these now. It seems the 4WD 996 cars are prone to front wheel bearings wearing out. If you're taking your suspension apart and have a chance to try this, spin the hubs once the CV shafts are disconnected.

If it spins too easily, and especially if it makes noise, it's a good idea to replace it because the bearing is worn.

Here's an example of how it should not look/sound on a 996TT. This car had about 30,000 miles. We've seen them on cars as few as 20,000, but it really depends on how and where it was driven.
YouTube - Bad front wheel bearing on Porsche 996TT

 

Thanks for the heads up Dan. Did you guys redo your site? The projects photo gallery looks great!

 

Thanks for the info/video Dan!

 

Hi JC919,
We did make several changes to the site recently including the new gallery. I'm glad you thought it looked good - I guess our work paid off.

 

How much does this kind of replacement typically run?

 

Glad you like the changes guys... Dan/I have been working on it over the last few weeks

Take a look at the site and see what you think... Over the next few days there will be a few more changes.