Soundproofing the wheel wells?

ACoupe · 04-23-2009, 09:34 AM

New member here. Quick intro, I drive a 2007 G35 Coupe, and am looking at my next ride.
I've been browsing this forum for a little while and last night my dealership got a yellow Z in, and I took it out for a spin.

Wow. I really like this car. Now granted it was only a short test drive as they had just received the car in and hadn't set it up in the system, and it was LOW on gas, so I couldn't test it's power or handling, but my initial impression is still one of strong like, approaching love. I really need to take a proper test drive before I plan it as a purchase.

I'd read about the rear wheel-well noise and did experience it last night, and am wondering if you could use a spray rubber of sorts (like they use in flat beds?) as a sound-dampening for the rear wells?

I was also surprised at the blind spots, they didn't really bother me all that much, nor the rear visibility (coming from a G I was used to small rear window and blind-ish spots).

molamann · 04-23-2009, 09:35 AM

I believe the rubber spray on the wheel well did very little to dampen road noise according to previous forum posts.

ACoupe · 04-23-2009, 09:40 AM

Damn, I thought it would have worked well. I checked around for posts on it but didn't find any.
I wonder what the effect would be on road grit making noise in the wells?
(I will search around a bit more

)

cg370z · 04-23-2009, 09:45 AM

You honestly get used to it, and it's not that bad.

ACoupe · 04-23-2009, 10:00 AM

My G does pick up some noise from the rear wells, not sure if it's equal, less or greater than the Z's. It's not a deal breaker by any stretch, just curious if there is a solid fix.
I seriously have the 370 on the brain...

Modshack · 04-23-2009, 10:22 AM

I'm planning to do an interior sound insulation with Second Skin Damplifier. It helped tremendously on my Vette (Pic below), and should help on the Z. On the wheel well "Tinking" the tread wear rating on these tires is only 140, so they're picking up everythng on the road. They also STICK to the road pretty well...Everything is a trade-off...

dad · 04-23-2009, 12:20 PM

Spayed on more undercoating...waste of time!

SoCal 370Z · 04-23-2009, 12:28 PM

I think about a solution to this issue almost every other day. The density of the rubberized sprayed on undercoating is simply too thin by those who have tried this solution to date, and they have not sprayed enough to actual buildup the material. There are systems such as the Duplicolor undercoating where you actually use a compressor driven gun to spray on several mils of thickness. In my searching there was one person on a forum whom was obsessive about reducing noise, and he referenced that on a limited edition Mazda, Mazda used some sort of felt to line the fenders and it worked well. I have been searching for a material that can be easily applied along the felts lines.

Diesel370 · 04-23-2009, 01:01 PM

Only way you are going to get rid of that road noise is to put some Luxury Liner in the trunk. Best to use is the Luxury Liner from Second Skin Audio

04-23-2009, 09:34 AM	#1 (permalink)
ACoupe Base Member Join Date: Apr 2009 Location: Ontario, Canada Posts: 22 Drives: 2007 G35 Coupe Rep Power: 16	Soundproofing the wheel wells? New member here. Quick intro, I drive a 2007 G35 Coupe, and am looking at my next ride. I've been browsing this forum for a little while and last night my dealership got a yellow Z in, and I took it out for a spin. Wow. I really like this car. Now granted it was only a short test drive as they had just received the car in and hadn't set it up in the system, and it was LOW on gas, so I couldn't test it's power or handling, but my initial impression is still one of strong like, approaching love. I really need to take a proper test drive before I plan it as a purchase. I'd read about the rear wheel-well noise and did experience it last night, and am wondering if you could use a spray rubber of sorts (like they use in flat beds?) as a sound-dampening for the rear wells? I was also surprised at the blind spots, they didn't really bother me all that much, nor the rear visibility (coming from a G I was used to small rear window and blind-ish spots).

04-23-2009, 10:22 AM	#6 (permalink)
Modshack A True Z Fanatic Join Date: Mar 2009 Location: Greenville NC Posts: 2,883 Drives: 370Z Sport Rep Power: 976	I'm planning to do an interior sound insulation with Second Skin Damplifier. It helped tremendously on my Vette (Pic below), and should help on the Z. On the wheel well "Tinking" the tread wear rating on these tires is only 140, so they're picking up everythng on the road. They also STICK to the road pretty well...Everything is a trade-off... __________________ Steal my car! (SOLD)...Now Porsche Cayman S Oil Cooler DIY: Here!

04-23-2009, 12:20 PM	#7 (permalink)
dad Grand Prix of Endurance Join Date: Nov 2008 Location: Tennessee Posts: 3,476 Drives: Mulsanne Straight Rep Power: 26	Spayed on more undercoating...waste of time! __________________ We can do without any article of luxury we have never had; but once obtained, it is not in human nature to surrender it voluntary.

04-23-2009, 12:28 PM	#8 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 33	I think about a solution to this issue almost every other day. The density of the rubberized sprayed on undercoating is simply too thin by those who have tried this solution to date, and they have not sprayed enough to actual buildup the material. There are systems such as the Duplicolor undercoating where you actually use a compressor driven gun to spray on several mils of thickness. In my searching there was one person on a forum whom was obsessive about reducing noise, and he referenced that on a limited edition Mazda, Mazda used some sort of felt to line the fenders and it worked well. I have been searching for a material that can be easily applied along the felts lines. __________________ ( Click to show/hide ) Why I NEVER say NO to the Panda Lou Fusz!!!

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04-23-2009, 09:35 AM	#2 (permalink)
molamann A True Z Fanatic Join Date: Jan 2009 Location: Los Angeles Posts: 1,666 Drives: 370Z with NAVVVVV Rep Power: 284	I believe the rubber spray on the wheel well did very little to dampen road noise according to previous forum posts.

04-23-2009, 09:40 AM	#3 (permalink)
ACoupe Base Member Join Date: Apr 2009 Location: Ontario, Canada Posts: 22 Drives: 2007 G35 Coupe Rep Power: 16	Damn, I thought it would have worked well. I checked around for posts on it but didn't find any. I wonder what the effect would be on road grit making noise in the wells? (I will search around a bit more )

04-23-2009, 09:45 AM	#4 (permalink)
cg370z Base Member Join Date: Mar 2009 Location: Pennsylvania Posts: 99 Drives: 2010 370z Rep Power: 16	You honestly get used to it, and it's not that bad.

04-23-2009, 10:00 AM	#5 (permalink)
ACoupe Base Member Join Date: Apr 2009 Location: Ontario, Canada Posts: 22 Drives: 2007 G35 Coupe Rep Power: 16	My G does pick up some noise from the rear wells, not sure if it's equal, less or greater than the Z's. It's not a deal breaker by any stretch, just curious if there is a solid fix. I seriously have the 370 on the brain...

04-23-2009, 01:01 PM	#9 (permalink)
Diesel370 Base Member Join Date: Dec 2008 Location: Florida Posts: 94 Drives: 350z Rep Power: 17	Only way you are going to get rid of that road noise is to put some Luxury Liner in the trunk. Best to use is the Luxury Liner from Second Skin Audio