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The reason Porsche doesn't use heavy soundproofing is weight of the material, Your car probably picked up close to 50 lb. Probably a Mercedes SL is a better choice if you want quiet.
I thought most of the noise comes from tire roar through the wheel wells. Don’t see any insulation in that area. As for the weight gain, just get a lighter girlfriend.
I thought most of the noise comes from tire roar through the wheel wells. Don’t see any insulation in that area. As for the weight gain, just get a lighter girlfriend.
I'm looking for a double amputee girlfriend that I can stuff in the back seat.
Funny….I was all bent out of shape with my GT3T being too loud…not motor noise mind you but rear end roar…and I swapped out the OEM Pirelli with Michelin PS4 and it was night an day…awesome problem solved…...and as I was waiting for my wife’s 992 Targa, I subscribed to every thread about noise reduction because having come from a bunch of 99x cars over the years, it was annoying the tire roar but low and behold, upon delivery, I find the 992 reasonably quiet in fact …so much so that I haven’t felt the need to swap the OEM rubber for PS4 s as yet…but will when time for a change of rubber for sure which I suspect will be even better. I am a big fan of Harry but he was pretty hard on the 992 that review which I suspect had to do more with rubber and road surface in the area rather then an inherent problem of the car. My opinion only of course.
The Pirellis are OK at the beginning, but as miles are added they begin to get really noisy depending on road surfaces.
My 2014 Boxster S came with the Goodyear F1's, and it was not until I switched to the Michelins PS4 that I realized how much nicer the Michelins were noise-wise.
The 2017 C2 that I just picked up has the Pirellis and "I" feel they are too noisy. I look forward to replace them in the future
The reason Porsche doesn't use heavy soundproofing is weight of the material, Your car probably picked up close to 50 lb. Probably a Mercedes SL is a better choice if you want quiet.
The higher levels of NVH in the 992 are not a weight issue.
Porsche is already using cheap bonded cotton behind trim panels as an absorber. Newer absorbers like 3M SM600L weigh even less and are more effective down to lower frequencies.
As far as dampeners like Dynamat, they could use 3M EDM 1029.
Dynamat: 0.66lb / sqft
3M EDM 1029: 0.28lb / sqft
Porsche doesn’t need to cover every inch of the interior like you see in aftermarket installs. They can just target key areas like wheel wells, rear quarter panels, doors. 10lbs of EDM 1029 placed by an engineer could do wonders for the 992.
Last edited by DriverDaily; 09-09-2022 at 04:54 PM.
The higher levels of NVH in the 992 are not a weight issue.
Porsche is already using cheap bonded cotton behind trim panels as an absorber. Newer absorbers like 3M SM600L weigh even less and are more effective down to lower frequencies.
As far as dampeners like Dynamat, they could use 3M EDM 1029.
Dynamat: 0.66lb / sqft
3M EDM 1029: 0.28lb / sqft
Porsche doesn’t need to cover every inch of the interior like you see in aftermarket installs. They can just target key areas like wheel wells, rear quarter panels, doors. 10lbs of EDM 1029 placed by an engineer could do wonders for the 992.
Have you experimented with any of the 3M stuff in the 992 yet? Specifically have you found ideal placement to reduce the tire roar without adding 50lbs of material or using acoustic tiles? I think the tire roar is the only sounds that bother me…well and the whistle on the drivers side.
06-29-2022, 04:17 PM
soundproofing
