Road noise - new to 991.1

Reply Subscribe

Thread Tools

Search this Thread

12-20-2019, 09:57 PM

s26singh

Instructor

Thread Starter

Join Date: Jun 2017

Location: Brampton

Posts: 111

Likes: 59

Received 33 Likes on 19 Posts

Road noise - new to 991.1

Just picked up a 2013 C2 3.4 Base. Has only about ~20,000 miles on it.

Car came with Pzeros - took it out for a quick spin in below minus temps - massive amounts of tire noise, due to low temps so I thought.

Switched tires to brand new Michelin Pilot Aplin PA4 N1 Porsche spec, tires in OEM size. Drove it home - same noise.

As the car gains speed, the noise increases. Drones out the exhaust noise - thats how loud it gets. Sounds like winter tire noise x 5.

What could this be? Bad wheel bearings? Bad drive shaft? Something worse and more sinister? Car drives perfectly fine otherwise. No vibrations in steering wheel or seats. Steering wheel does dart a little in road imperfections.

Your input would be greatly appreciated!

Reply Like

12-20-2019, 10:02 PM

aways

Instructor

Join Date: Sep 2018

Posts: 179

Likes: 54

Received 41 Likes on 24 Posts

Are you driving on nice new asphalt, or scored cement roadway? Makes a huge difference in tire noise...

Reply Like

The following users liked this post:

BGLeduc (12-23-2019)

12-20-2019, 10:09 PM

s26singh

Instructor

Thread Starter

Join Date: Jun 2017

Location: Brampton

Posts: 111

Likes: 59

Received 33 Likes on 19 Posts

Quote:

Originally Posted by aways

Are you driving on nice new asphalt, or scored cement roadway? Makes a huge difference in tire noise...

Mixed roads - new asphalt, old asphalt, cement - smooth rough. All sounds the same

Reply Like

12-20-2019, 10:21 PM

aways

Instructor

Join Date: Sep 2018

Posts: 179

Likes: 54

Received 41 Likes on 24 Posts

If it all sounds the same then it can't be tire noise... would have to hear the character of the noise to hazard a guess on it's source.

Reply Like

12-20-2019, 10:27 PM

s26singh

Instructor

Thread Starter

Join Date: Jun 2017

Location: Brampton

Posts: 111

Likes: 59

Received 33 Likes on 19 Posts

Quote:

Originally Posted by aways

If it all sounds the same then it can't be tire noise... would have to hear the character of the noise to hazard a guess on it's source.

yes you are right - it is not tires - thats for sure

Reply Like

12-20-2019, 10:48 PM

mymac

Pro

Join Date: Sep 2016

Location: WA

Posts: 507

Likes: 0

Received 14 Likes on 8 Posts

It's a sport car. You get free road noise.

Reply Like

12-20-2019, 10:56 PM

HenryPcar

Three Wheelin'

Join Date: Mar 2017

Location: Northern California

Posts: 1,970

Likes: 13

Received 233 Likes on 168 Posts

Droning or NVH noise could be from after-market motor or transmission mounts.

Reply Like

Trending Topics

Building confidence for HPDE

55

1.1k
Official waiting room for those with a new 992 on order --- come on in !!

21.9k

2.8M
992 Carrera T Club

26.3k

2.7M
What did you do to your 996TT today?

16k

1.3M
Minor paint chip pre-delivery, what would you do?

32

1.5k

12-20-2019, 10:58 PM

s26singh

Instructor

Thread Starter

Join Date: Jun 2017

Location: Brampton

Posts: 111

Likes: 59

Received 33 Likes on 19 Posts

Quote:

Originally Posted by mymac

It's a sport car. You get free road noise.

have had a few sports cars - including another Porsche - 2016 981 Cayman GTS. They definitely didnt make this much noise.

Reply Like

12-20-2019, 10:59 PM

s26singh

Instructor

Thread Starter

Join Date: Jun 2017

Location: Brampton

Posts: 111

Likes: 59

Received 33 Likes on 19 Posts

Quote:

Originally Posted by HenryPcar

Droning or NVH noise could be from after-market motor or transmission mounts.

NVH?

it doesnt have a after-market motor.

not sure about the transmission mounts - will have that checked

Reply Like

12-20-2019, 11:00 PM

#10

LexVan

Banned

Join Date: Jan 2013

Location: Chicagoland Area

Posts: 26,141

Likes: 0

Received 5,402 Likes on 2,513 Posts

What is your reference point? What are you used to driving??

Reply Like

12-20-2019, 11:02 PM

#11

achtung6

Racer

Join Date: Dec 2007

Location: USA

Posts: 330

Likes: 17

Received 49 Likes on 31 Posts

Quote:

Originally Posted by aways

Are you driving on nice new asphalt, or scored cement roadway? Makes a huge difference in tire noise...

Yes, coarse road surfaces are downright unpleasant for more than a few seconds. The Pzeros my car had when I got it were at least a year old and were very noisy. I replaced them with MPS4S and the noise levels are much more reasonable now....but this car is not quiet.