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Road noise - new to 991.1

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Old 01-03-2020, 11:04 AM
  #91  
LexVan
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Originally Posted by drcollie
I've never seen a car with 20K miles on it have a bad wheel bearing, I'd chalk that up to a fluke. Very unusual, but glad you located it and fixed it.
Doc, can over torquing a wheel be a potential cause?
Old 01-03-2020, 11:14 AM
  #92  
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Usually a wheel bearing going bad that early is a fluke or a lot of track time.
Old 01-03-2020, 11:19 AM
  #93  
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Originally Posted by LexVan
Doc, can over torquing a wheel be a potential cause?
No, the wheel face rides against the hub, not the bearing, so tight lugs would not be a factor.

The OP's car I see has Ontario plates - perhaps salt/corrosion found a way in past the seal, that's my thought. I know my diesel trucks I run in my business get destroyed running up into New England in the winter, they literally rot out in 5 to 6 years from the brine and chemicals they put on the roads vs. the ones I keep locally in Virginia which can go 20 years, I don't put my own Porsche (2014) on the roads until spring rains wash off all the winter crud on the roads for that reason. Could also just be a bad bearing, it happens. I know I've driven a 911 to 232,000 miles on the original wheel bearings (and clutch) so I was very surprised to see this 2013 eat a bearing at 20K. .
Old 01-03-2020, 11:24 AM
  #94  
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Originally Posted by Carlo_Carrera
Usually a wheel bearing going bad that early is a fluke or a lot of track time.
I had a 2009 audi S4. Changed 3 bearings within 25k km. It might have been a faulty batch but I think the crappy salt on the roads, the horrible potholes in quebec as well as cheap aftermarket winter wheels might have contributed to the failures.
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Old 01-03-2020, 11:36 AM
  #95  
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Originally Posted by rockrdude
I had a 2009 audi S4. Changed 3 bearings within 25k km. It might have been a faulty batch but I think the crappy salt on the roads, the horrible potholes in quebec as well as cheap aftermarket winter wheels might have contributed to the failures.
My mechanic feels the same way - this car was originally from Ontario and then moved to Montreal for a while - so likely the weather and potholes played a role here - potholes being the main culprit.
Old 01-03-2020, 12:59 PM
  #96  
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This was the right rear wheel on a C2 base (no limited slip differential), so it got more abuse, especially during hard acceleration and overly enthusiastic starts.
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Old 01-03-2020, 03:52 PM
  #97  
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Originally Posted by s26singh
My mechanic feels the same way - this car was originally from Ontario and then moved to Montreal for a while - so likely the weather and potholes played a role here - potholes being the main culprit.

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Old 01-13-2020, 12:59 PM
  #98  
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[QUOTE=JHW911;16303390]As much as the 911 is touted as daily driver friendly IMHO it is not a true GT car. If I am driving more than an hour away I take one of my other cars. At highway speeds the noise is so loud that the radio is hard to hear.[/Q
My '16 c2S (this is my forth 911) makes so much road noise my wife does not want to take any long (or short) rides in it. And I agree about the radio; I can't imagine spending a lot of money for better radio because you can't hear it anyway. I have PZeros with only 5K on them.
Old 01-13-2020, 01:31 PM
  #99  
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As much as the 911 is touted as daily driver friendly IMHO it is not a true GT car. If I am driving more than an hour away I take one of my other cars. At highway speeds the noise is so loud that the radio is hard to hear. My '16 c2S (this is my forth 911) makes so much road noise my wife does not want to take any long (or short) rides in it. And I agree about the radio; I can't imagine spending a lot of money for better radio because you can't hear it anyway. I have PZeros with only 5K on them.

P Zeros are not quiet, you will see a noticeable difference going to Michelins. Most the road noise if from the rear wheel wells and Porsche doesn't insulate those like a company such as Aston Martin does, because of weight of the wheel well insulation. If it's too noisy, you could look at putting some Dynamat into the wheel well area, that will quiet it down considerably. .

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Old 04-01-2020, 11:12 PM
  #100  
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Originally Posted by drcollie
As much as the 911 is touted as daily driver friendly IMHO it is not a true GT car. ........... If it's too noisy, you could look at putting some Dynamat into the wheel well area, that will quiet it down considerably. .

https://www.youtube.com/watch?v=lBXZghtn3LU
I did a Dynamat and foam on just the doors on my old 997 which was a DD and it helped a little. I could tell the difference just by doing doors. Never got to do the rest of it before had to sell the car
But i can attest it does help.
Old 04-02-2020, 09:00 AM
  #101  
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For what it's worth if this comes up again for others....

It is shameful that both a dealer and an indy said this was normal noise. Wheel bearing noise is very distinct. The OP described it as overwhelming - that itself is not normal noise. Further it does not change on road surface like tire noise does. It does not change with a switch in tires (i.e. summer to winter tires). It usually builds with speed linearly which is a sign of a rotating-part-problem. Tire noises will obviously change on road surfaces but will also tend to change with speed and tire heat as the tire shape flexes.

Wheel bearings are usually pretty tough on cars built for the track but all it can take is a bad seal or a bad pothole to knock 'em out of whack and have them die an early death.



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