road noise
05-09-2018, 11:03 PM
#16
Rennlist Member
Last edited by shammerman; 05-09-2018 at 11:06 PM. Reason: Add
The following users liked this post:
PatrickBateman (01-16-2022)
05-09-2018, 11:37 PM
#17
RL Community Team
Rennlist Member
Rennlist Member
Dont forget, you went from worn tires to new ones. Normal for the new ones to be quieter.
05-09-2018, 11:54 PM
#18
Rennlist Member
First of all, the little dustup above on etiquette seems a little silly. We all have opinions, and one of mine embraces lively debate. If anyone feels that a slightly sarcastic comment or response is uncivilized, they might need to explore other auto forums on the net.
Second, road noise has both objective and subjective components. As stated above, most anecdotes about changes in noise, especially reduction, occur when installing new tires. But these are not exactly controlled experiments, and between biased expectations and changes in things like tire pressure and routes (and thus road surfaces) have strong influences.
Third, my own subjective anecdotes. I have a 2017 C2, delivered with 19 inch wheels and Yoko tires. At first, the car seemed noisy (or at least noisier than expected). Over time, it improved (or I got used to it). And the biggest variable is pavement type and quality. Among the worst are grooved concrete surfaces, apparently the in-thing for many city freeways. I also have stock 19 inch wheels with Conti winter tires. When I switched these, multiple times in the past 12 months, I sometimes thought the tire noise changed, other times not.
Fourth, we can certainly attempt to improve what Porsche produced. I recently bought some dynamat to see what I can do to improve noise insulation. Stay tuned.
Second, road noise has both objective and subjective components. As stated above, most anecdotes about changes in noise, especially reduction, occur when installing new tires. But these are not exactly controlled experiments, and between biased expectations and changes in things like tire pressure and routes (and thus road surfaces) have strong influences.
Third, my own subjective anecdotes. I have a 2017 C2, delivered with 19 inch wheels and Yoko tires. At first, the car seemed noisy (or at least noisier than expected). Over time, it improved (or I got used to it). And the biggest variable is pavement type and quality. Among the worst are grooved concrete surfaces, apparently the in-thing for many city freeways. I also have stock 19 inch wheels with Conti winter tires. When I switched these, multiple times in the past 12 months, I sometimes thought the tire noise changed, other times not.
Fourth, we can certainly attempt to improve what Porsche produced. I recently bought some dynamat to see what I can do to improve noise insulation. Stay tuned.
05-10-2018, 12:56 AM
#20
Burning Brakes
First of all, the little dustup above on etiquette seems a little silly. We all have opinions, and one of mine embraces lively debate. If anyone feels that a slightly sarcastic comment or response is uncivilized, they might need to explore other auto forums on the net.
Second, road noise has both objective and subjective components. As stated above, most anecdotes about changes in noise, especially reduction, occur when installing new tires. But these are not exactly controlled experiments, and between biased expectations and changes in things like tire pressure and routes (and thus road surfaces) have strong influences.
Third, my own subjective anecdotes. I have a 2017 C2, delivered with 19 inch wheels and Yoko tires. At first, the car seemed noisy (or at least noisier than expected). Over time, it improved (or I got used to it). And the biggest variable is pavement type and quality. Among the worst are grooved concrete surfaces, apparently the in-thing for many city freeways. I also have stock 19 inch wheels with Conti winter tires. When I switched these, multiple times in the past 12 months, I sometimes thought the tire noise changed, other times not.
Fourth, we can certainly attempt to improve what Porsche produced. I recently bought some dynamat to see what I can do to improve noise insulation. Stay tuned.
Second, road noise has both objective and subjective components. As stated above, most anecdotes about changes in noise, especially reduction, occur when installing new tires. But these are not exactly controlled experiments, and between biased expectations and changes in things like tire pressure and routes (and thus road surfaces) have strong influences.
Third, my own subjective anecdotes. I have a 2017 C2, delivered with 19 inch wheels and Yoko tires. At first, the car seemed noisy (or at least noisier than expected). Over time, it improved (or I got used to it). And the biggest variable is pavement type and quality. Among the worst are grooved concrete surfaces, apparently the in-thing for many city freeways. I also have stock 19 inch wheels with Conti winter tires. When I switched these, multiple times in the past 12 months, I sometimes thought the tire noise changed, other times not.
Fourth, we can certainly attempt to improve what Porsche produced. I recently bought some dynamat to see what I can do to improve noise insulation. Stay tuned.
05-10-2018, 02:58 AM
#21
Rennlist Member
Excessive road noise in the cabin detracts from being able to use the car for long trips. This has been noted in reviews such as in C&D. I have the same car except MT. And brand of tires don't make much of a difference. One can try to compensate with a loud droning exhaust.
https://www.caranddriver.com/reviews...4s-test-review
"The one aspect that might not make one feel grand about touring in a 911 C4S is interior noise. Road and tire noise raise the sound level to 76 decibels at 70 mph, which is anything but luxurious. Even the Mercedes-AMG GT S belts out 74 decibels at 70, so the 911 isn’t horrible in this regard, but ears can grow tired of the abuse on longer trips."
https://www.caranddriver.com/reviews...4s-test-review
"The one aspect that might not make one feel grand about touring in a 911 C4S is interior noise. Road and tire noise raise the sound level to 76 decibels at 70 mph, which is anything but luxurious. Even the Mercedes-AMG GT S belts out 74 decibels at 70, so the 911 isn’t horrible in this regard, but ears can grow tired of the abuse on longer trips."
05-10-2018, 03:41 AM
#22
Rennlist Member
I'm quite surprised that folks in the US would want to do long road trips in a 991, ears and back spring to mind. Certainly the concrete freeways are a terrible noise in most cars here on summer tires, so that is my biggest gripe yet nothing to do with the car. People on here from Europe are perhaps questioning the issue, the faster roads there are superb. The engine buzzing away behind me, I find it all part of finally owning a 911, I didn't expect anything less (more?).
05-10-2018, 07:40 AM
#23
Pro
Hey guys, lets not get this thread derailed.
Just wondering, how much does the air pressure in the tires make a difference on the road noise? For example slightly overinflated vs slightly underinflated?
Just wondering, how much does the air pressure in the tires make a difference on the road noise? For example slightly overinflated vs slightly underinflated?
05-10-2018, 08:27 AM
#24
Rennlist Member
I did not notice any difference in road noise using different pressure settings in the OEM P zeros in my C4S. Initially used normal, full load which yielded a jittery & harsh ride. Lowered to comfort partial load and ride improved but not noise. The noise is only noticeable in highway driving at a steady speed where a constant roar fills the cabin. Concrete sections are barely tolerable. Someone suggested using ear plugs and that is a good idea.
05-10-2018, 08:36 AM
#25
Odd, I've gone on a few longer trips on OEM P zeros and wasn't bothered at all by road noise.
05-10-2018, 08:43 AM
#26
I left Porsche for a variety of reasons including excessive interior noise, and bought a new R8 in 2015. Like this car a lot but what was very disappointing is interior road noise levels that are at least as high as my 991! Now with worn (but not worn out) tires the noise in this car on my crappy concrete highways is deafening - seems even louder than I recall in the 991. Do these cars suck or what?
But seriously, I've always enjoyed owning sports cars, but they really can be a PITA!
But seriously, I've always enjoyed owning sports cars, but they really can be a PITA!
05-10-2018, 10:08 AM
#27
In my opinion, you have 3 options -
1. Turn the radio up
2. Get older - what you can’t hear won’t bother you! (Also works at home and in many other aspects of life)
3. Drive a different car
:-)
1. Turn the radio up
2. Get older - what you can’t hear won’t bother you! (Also works at home and in many other aspects of life)
3. Drive a different car
:-)
The following users liked this post:
Frank996 (01-05-2022)
05-10-2018, 10:15 AM
#28
Three Wheelin'
I don’t appreciate your comment and referring to me as a parrot. I have been a Porsche owner since 1999 and have had three Porsches over the years. I recently changed my P Zeros to Michelin PS4’s and the difference in road noise is significant. So dear Archimedes, please do not talk down and call names to your fellow board members, let’s keep the conversation and share of opinions respectful.
05-10-2018, 10:17 AM
#29
Banned
Join Date: Jan 2013
Location: Chicagoland Area
Posts: 26,141
Likes: 0
Received 5,413 Likes
on
2,516 Posts
05-10-2018, 10:21 AM
#30
Rennlist Member
We have a 2017 911 GTS with Pirelli tires and a 2008 911 Turbo with Michelins. There is a significant difference in road noise between the 2 cars, I believe it's primarily tire-related. The GTS is noisy starting about 40 mph and worse as you accelerate, and markedly different depending on the condition of the road. We have some new pavement near home and it's so much quieter when you're going over that. We had the turbo out over the weekend and noticed much less road noise, all you can hear is the exhaust (Kline system). BTW, the turbo is a cab so I would expect more road noise even with the top up (top was up on this last drive). I've been thinking about replacing the Pirellis with Michelins but the comments I've been reading leave me unsure that it would be the right choice.