Rear road noise louder with speed? Not tires!

[Chuck W.]

My money would be on the indy that put it as the right rear wheel bearing. Mine went out at 21,000 miles last year. Independent was $400 per wheel. I bought the wheel bearing from Sunset Porsche for $57.16 each plus $5.15 each for the lock nuts.

Good luck and keep us posted.

[evo-r]

Thanks for all the responses. One weird thing is that the shop that stated it's some bearing in the differential actually put the car on the lift and put in "drive" at various speed while 2 other people were underneath the car to hear which side the noise is coming from (with mechanics stethoscope). Their conclusion were the noise is coming from the center near differential.

Based from the noise change from left & right sweeping motion, I'm just going to replace the passenger rear bearing first and go from there.

[evo-r]

So I had the rear passenger side wheel bearing replaced yesterday and now the noise is gone! I really drove the car today and for the very first time since I bought the car 5 months ago I can now hear the true Porsche engine/exhaust noted

I took a look at the failed bearing and it doesn't look that bad inside (even the mechanic agreed) but nevertheless it was making that loud road noise. Now I feel the car drives smoother and at the same time more powerful for some reason... Oh wait... forgot I also installed JD's Spirit of Ecstasy today... (maybe that's the real reason)!

[woodsman]

yippee! glad it's fixed and it wasn't the diff