Thank you. :tup: Exactly the kind of time I have been talking about. People talking 1 or 2 hours are just giving mis-information to the others here thinking about this. This is not a quick easy job. It's not hard per say, but it is tedious and long. It's also hard on your bum and your back and your fingers.

Thanks again, exactly what I've been saying. It took me 9 sheets @ 18 x36 to cover the entire hatch area. I had 1 sheet left (bought 10 sheets from FatMat), so I used the last sheet to double up on material over the front of the fender wells where most of the plinking noise is coming from.

Today for the first time I hit an area with lots of small pebbles..WHOA! What a racket even with all that dynamatt..but it was only for a few seconds so no big deal...

You should heard it without the dynamat!!!! :eek2:

I've heard less noise when riding a Polaris Razor. It was like having a large piece of tin 6 inches from your ear getting plinked by a rapid fire high velocity BB gun. I truly don't understand the tire noise debate, because that sh*t is mild compared to the pebbles. Way mild.

Trouble is the tire noise is constant..but the pebbles are just an occasional thing..

Engine sound, transmission scream, exhaust note, tire/road noise = Mechanical Music :tup:

Plinking rocks, tinking pebbles, spraying water = Obtrusive Noise :shakes head:

Although if you ask RUSH, it's all good....

Red Barchetta
Songwriters: Lee, Geddy; Lifeson, Alex; Peart, Neil;

My uncle has a country place that no one knows about
He says it used to be a farm before the Motor Law
And on Sundays, I elude the eyes, hop the turbine freight
To far outside the wire, where my white-haired uncle waits

Jump to the ground as the turbo slows to cross the borderline
Then run like the wind as excitement shivers up and down my spine
But down in his barn, my uncle preserved for me an old machine
For fifty odd years, to keep it as new has been his dearest dream

I strip away the old debris that hides a shining car
A brilliant red Barchetta from a better vanished time
Ooh, fired up the willing engine, responding with a roar
Tires spitting gravel, I commit my weekly crime

Wind in my hair
Shifting and drifting
Mechanical music
Adrenaline surge

Well-weathered leather, hot metal and oil
The scented country air
Sunlight on chrome, the blur of the landscape
Every nerve aware

Suddenly ahead of me across the mountainside
A gleaming alloy air car shoots towards me, two lanes wide
I spin around with shrieking tires to run the deadly race
It goes screaming through the valley as another joins the chase

Drive like the wind, straining the limits of machine and man
Laughing out loud with fear and hope, I've got a desperate plan
At the one lane bridge, I leave the giants stranded at the riverside
Race back to the farm to dream with my uncle at the fireside

Between the exhaust and the tire.. it's extremely loud in my car. I drove 12 hours on a road trip and the sound actually made me sick. :-(

Pirelli Pzero tires are the noisiest rubbers I've ever had.

I know about noise with my AAM short tails:excited:

Here is one for you Bonzo..lets hear you play this..



Get your motor runnin'
Head out on the highway
Looking for adventure
In whatever comes our way

Yeah, darlin'
Gonna make it happen
Take the world in a love embrace
Fire all of your guns at once
And explode into space

I like smoke and lightnin'
Heavy metal thunder
Racing in the wind
And the feeling that I'm under

Yeah, darlin'
Gonna make it happen
Take the world in a love embrace
Fire all of your guns at once
And explode into space

Like a true nature child
[ From: BORN TO BE WILD Lyrics - STEPPENWOLF ]
We were born
Born to be wild
We can climbed so high
I never wanna die
Born to be wild
Born to be wild

Get your motor runnin'
Head out on the highway
Looking for adventure
In whatever comes our way

Yeah, darlin'
Gonna make it happen
Take the world in a love embrace
Fire all of your guns at once
And explode into space

Like a true nature child
We were born
Born to be wild
We can climbed so high
I never wanna die
Born to be wild
Born to be wild

Jazz, classical and country = real music :tup:

Loud drums, crashing cymbals and hard rock = Obtrusive noise :shakes head:

:) :) :tup:

( you have to see Bonzo's avatar to get this :))

Bonzo..
Question what is "A gleaming alloy air car..." ? air car?

Is this set in the future?

You cant be subtle with me..i need things spelled out..

Oh crap, don't get THIS started. :eek:

This could be 5 threads in itself all ending closed for sure. I mean all it would take is for me to say something like, "Country music? Are you kidding me? Modern country music is nothing but pure cheesy pop crap." And away it would go. So no, you aren't going to bait me here.

:tiphat:

No, I would say it's an airplane, but that's just a guess. I have bolded other words that might hint to that also. You never know, Peart's lyrics can be very.....very.... what's the word I'm looking for??? Not literal, but impressionistic. Ya know.

"Suddenly ahead of me across the mountainside
A gleaming alloy air car shoots towards me, two lanes wide

what sorcery is this?!?

how is it that the one called "Bonzo" can read my thoughts?!!??

Currently own a 2004 base auto G35 Coupe and I have a 2013 Z 6mt Sport Package on order. For those of you who have owned a G35 Coupe around my year, how much louder is the road noise on the Z?

Let's say on a scale of 1 to 10 and the G35 is a 5, what would the Z be? And is this noise just on concrete highways?

I did take a 20 minute test drive with the Z on the highway and some bumpy/beat up back roads and it seemed quieter and smoother than my G35, however this was all on asphalt.

i think kenchan has a g35 and a Z. you could PM him

You want to know how much louder the 370Z is ? Strip the carpeting and mat out of the trunk of your G35 and fold down the rear seat. That's a good start.
I owned a 2004 G35 Coupe and it was about half as loud as the Z. As much as I love my 370, the tire & road noise is so obtrusive it just about ruins long freeway road trips. You can barely hear the stereo unless it's turned up to 13 or 14 and forget hearing the quieter passages of songs or having a conversation with a passenger without speaking LOUDLY. Spirited mountain drives, not so much of an issue...

Dwight, your explanation of strip the carpeting and mat out of the trunk and fold down the rear seat was excellent. Thanks for your help.

Red Barchetta is definitely set in the future, so I always take it to be a hovercraft / spinner like Blade Runner.

I did a long drive today, car was above 80db+ (indicated on my phone) @ 75mph 6th gear cruise, definitely loud

noise v. speed
 

read the whole thread, long as it was. thx for all the prose and pics.
might try the rubber matting ritual ..

haven't had problem with tire noise per se, the 19's are 12 lbs ea. lighter than the 18's on the 350, so expected higher frequency road resonance. i like the feedback, can tell difference between yellow and white paint, which is useful.

seen too many references to 60mph levels. btw, dealers only test to 70, so my issue not addressable by them, which is more triple digit.

my 08 350e mt cruised fine at 135, no bassy drone. but 370/sp is droning w/ horrible booming from 90 up.. starts getting loud @95, and just increases, 130sounds like one is inside a fully loaded 4 prop b-52 bomber. maybe tires are main culprit.

wonder if hatch < the door that's raised with the window in it> could be packed inside with dynamat stuff, along with trunk surfacing?

once, maybe 3 decades back, read in a car mag that the ticking heard in the jag sedan was courtesy of 500 lbs of wool. today we have rubber with air cells etc. so 20 lbs or so for acoustic control isn't much in comparison even if it doesn't get the tick tock.

with xtra 20HP from straight H exhaust one could use up to 190 lbs of acoustic insulation, and keep same weight / power ratio as with stock zero; 500 lbs would require 380hp

Tell me about this ap that you have that measures sound levels..sounds interesting...

Nice Indeed
 

I was wondering who that was. Nice

So add
 

a dynamat like product and some carpet insulation over the sound deading material. Gee I did that and the noise is fine. On asphalt, its as quiet as any car ive driven.

I put Dynamat all over my hatch area (both shock pillars and the latch area all the way up to the backs of my seats). Also I put some as far up into my left fender as I could reach (the right fender is not accessible from the hatch area)

It helped, but the car is still noisy.

now I'm ordering materials to coat the inside of the doors. I will see if that helps.

the guys that make GT Mat are offering free samples (10 ft square) of there product to members. you will need more like 30 to really get after the hatch and (I'm guessing) 20 or so for the doors (some is wasted when you trim the sheets to fit your panel shapes.)

Here is a photo of my Hatch as i was just getting started putting down the mat. I spoke with my dealer service manager and he tols me how to get all the trim out. (it is easy)
http://www.the370z.com/members/surfd...namat-put.html

http://www.the370z.com/members/surfd...namat-put.html
http://www.the370z.com/members/surfd...namat-put.html

Cabin noise drove me crazy. I replaced my tires with Continentals and the whole cabin noise problem went away. Cut the noise by at least 60 to 70%. Best $850.00 I ever spent!

Link to this? ;)

That's the set I used to replace my stock tires. Worked wonders! I recommend it to anyone concerned about road noise.

:confused: err.... what kinda roads u driving on....???

i have test pipes and a CNT cat back and i car carry on a conversation very quietly at 70mph.

Just curious, Continental DW or DWS?

Different tires
 

Makes a difference. My Hankooks are so much more quieter than the Yokohamas

Actually Extreme Contact DWS---doesn't mean a lot to me technically, but sure worked wonders in vastly reducting road noise in the cabin. I've loved my car ever since.

There is NO sound dampening in the doors..NONE at all..cover the inside of the doors and get some good quiet tires and the car will be totally different..

Same story here!! D dry W wet and S snow..

Thanks!

I dynamatted the doors & trunk this past weekend by myself. Took about 6 hours total and costed $160 for dynamat & tools. Bought the 7 sheet pack from Amazon, that's more than enough.

It does reduce cabin noise by about 10 - 15% (yes, scientific personal ear reading, lol). I was hoping for a little more but overall happy with the time & money invested in this project. Stereo sounds better and gravel/rain hitting tire wells is reduced by more than the numbers listed above.

I agree with many previous posters on this thread, stock tires are the main culprit for the road noise. However, no plans to change them out until they wear down.

I'm adding damplifier pro to my hatch and second skin spectrum over that, and more spectrum on the outside to whatever areas i can get to, probably just the wheel wells and under where the exhaust is. Then adding a layer of luxury liner pro on top of all of that and some dense foam into all the nooks and crannies that i can get to. and then a layer of foam just right under the top layer of carpet in the hatch.. I'm working on it should be done in about 2-3 weeks when i have time.. i'll post back on how my perception in sound noise is. I hope it makes a good improvement, the little rocks in a can noise back there is driving me crazy.

good
 

Nice job. I simply used a product called Frost King from Lowes, added a insulated light blanket wrapped around where the spare was( took it out) and replaced the tires with Hankooks.Absoltely satisfied. Quiet.

I had a feeling the main culprit was the tires.

I dread the day I have to change them out though (for the price), but I'm sure I'll be happily surprised.

B-Quite
 

I realize this is an old thread but anyone reading it might try this stuff B-Quiet sound deadening materials - Brown Bread - Better than Dynamat!! brownbread it does a great job and is quite a bit cheaper than dynomat.