road noise
 

What is the fix? I read about it being a con for this car.The base radio goes to level 13 at 60mph. Is there suspension bushings,sound mats, or certain tires to buy. PLEASE ADVISE..

Switching from the OEM Potenza RE050A's to Potenza S04's made all the difference for me. I'm told that the Pilot Super Sports do even a little better.

I installed some sound damping material in the hatch area of my Z and it made a big difference. Tires can make a difference. Softer bushings would probably make the handling sloppy.

+1. Even the Ventus V12s I have are a lot more quieter than the stock Bridgestones.

http://www.the370z.com/nissan-370z-g...proofing+hatch

I dynamatted the doors & hatch (took me about 3 1/2 hrs) and it has helped. I'm fine with the car at this noise level but will change my tires to the Super Sports when the originals wear down a little more.

Hopefully I did this right, above is a link about cabin noise. There is also a DIY somewhere about it.

what road noise? stereo > road noise

Yah change tires.

My Continental DWS are much quieter but still the cabin is noisy. Oh well, it would be nice to have G37 quiet but I didn't want a G37, I wanted a Z. I think I can live with it :).

+1

I recently picked up the pilot super sports, road noise is better, but it is still very present. I think dynomat or whatever sound proofing material is suggested would make a more significant change. I haven't gotten to that step yet.

Or just go baller status and purchase a Bentley for no road noise.

you want quiet, should have bought a G37

x2

This won't make it Lexus quiet, but it does eliminate the 'hollowness' of the Z. Before I did it, the hatch sounded like a tin can when the wheels kicked up small rocks. Afterwards the tin can noise was eliminated.

Dynamatted hatch and doors. Installed 2" foam in hatch. Replaced Yoko tires with Pilot Super Sports. Noise is down about 6 dB. Still sounds gravely on smooth asphalt and harsher sounding on grooved concrete slabs.

I checked the firewall and there is factory 3/8" pad that goes under seats.

I think some the noise is coming through door seals (they are good and tight).

Too bad more can be done to cut the noise.

dynamatt the front kick panels too, that helps get rid of noise from the front tires. Stock, there is nothing there at all. Just take them off and place the dynamatt right on them.

Louder exhaust...

G37 isn't that quiet. Trust me

Has anyone used FatMat Sound Deadener? It's less expensive then Dynamat.

I put conny DWs and dynamat in all through the hatch (I went overboard). I have berk HFCs and Catback and the dynamat definitely cut that down from frigging LOUD to just frigging awesome. However, road (tire din) noise is still pretty bad. I track my Z, so I don't want to add any more weight by going crazy with dynamat, but I'd say a bit in the hatch is a good investment. BTW you do not have to "carpet" the whole hatch with dynamat. It is just intended to change the resonance frequency of the panel you are working on. A bit in the middle of any resonating panel is all you need and can save substantial weight. There are better sound deadening solutions (fatmat) that insulate from noise. really it is a two step process
1. Dynamat on resonating panels (just tap them to see if they "ping")
2. Dynalineror equivelent to insulate from outside sound. Dynamat.com | Dynaliner Brand
3. Next step is probably tires and perhaps bushings. I've run OEM, Pilot Super Sports, and Continental DWs. Don't kid yourself, none of them make the Z quiet.

After trying all this (actually I have not swapped out bushings...) I now just stuff in some earplugs that I get from work (I'm a pilot). I can crank the Bose up to 25 or so, and cruise in style able to actually hear my music. I only wonder what the neighbors think when I thunder by with my stereo cranked to "11" and my berks screaming at all the local liberals.

I've often wondered if going up a tire size would make any difference?
Like going from a 45 series to a 40 series on the front and a from a 35 to a 40 on the back.
I know most will think it would look like tractor tires but just wondered if more sidewall would help those of us that are not racing/tracking etc.

I don't care about being lowered or hellaflush or any of that obviously. ;)

just wondering... I don't know if it's even possible to fit those anyway.

I did GT mat in the hatch and doors during my stereo install and it made a huge difference in road noise. I did the whole hatch & all of both doors. I think what really made the difference was adding GT mat over the rear wheel wells. I hated the "ting" sound that every rock on the road made being thrown up against the rear wheel wells. I used two layers of GT mat over the wheel wells and that sound has been almost completely eliminated. I didn't notice as much difference in sound reduction when I did the doors, but my stereo sure sounded a lot better. I also switched to Michelin PSS and they run slightly quieter than the Bridgestones but not a whole lot. I was hoping the Michelins would run a little quieter than they do, but they do help reduce noise slightly. One last thing that helps reduce noise in the hatch area is using the factory carpeted mat. I ran with mine in/out quite a bit while installing the stereo and noticed less noise with the extra carpet pad installed.

I used Raammat sound deadener and their insolite foam mat on top in the hatch and doors. I had extra so I went a little overboard in the hatch but I'm pleased with the results. I wasn't trying to make the car quiet (the Z will never be quiet) but rather make the car sound and feel more solid, and it did just that. Driving over rocks no longer makes the 'ping' noises and the stereo sounds much better. I did this back in 2013 and have since added an exhaust. I think the deadener really helped cut unwanted vibrations in the hatch floorpan as well.

I used the same combo. I still need to do the doors, but doing the back half of the car made a big difference. It's the foam on top that does most of the work.

How did you guys do the clips holding g the wires? Did you cut or just cut and paste around?

I wouldn't count on tires making a difference but softer bushings probably would. (And less expensive.).

I cut holes in the dynamat and used OEM clips right back in

If you want to make your car quieter, you'll have to use sound blocker on top of the sound dampener. I used second skin damplifier and luxury liner on top of that and I got nothing but good thing to say about it. Just a warning though, the luxury liner is extremely heavy.

Same here. Mostly cut a slit in the GT mat and worked it around a wire or plug. I didn't remove many plugs. It worked well and the GT mat sealed up and stuck very well around all the openings. It was really easy to work with.