Road Noise

cwhawk

Two weeks ago, I purchased a 2012 370Z Touring. The car is white with black interior and the 7 speed automatic. It had less than 12,000 miles. I researched the Z cars before buying and was aware there have been some complaints about excessive road/cabin noise. My vehicle was relatively quiet, but less noise would have made it more enjoyable.

I read many posts that discussed sound dampener such as Dynamat, Fat Mat, etc. being placed in the hatch. I got a quote for $500 from a audio dealer. Being retired, I have time on my hands and am above average with DIY projects.

I purchased a 36 sq ft kit of Stinger Road Kill for $95 from Amazon. (A local dealer wanted $200 for the exact kit.) I also got free shipping. It took about 3 1/2 hours to remove the trim from the hatch area and install the Stinger. I placed it everywhere there was bare metal and probably have 85% coverage in the hatch area. A test drive revealed a little less noise. It was worth my time and $95, but I would have been disappointed if I had paid $500 for the difference. I used about 5 sheets of the 9 sheets in the kit, so 4 sheets remained.

Today, I paid a company to install the Stinger Roadkill Sound Dampener inside both doors. They charged $60 labor and used 3 sheets of my product. As I said earlier, the noise was not bad originally, but I wanted it a little less. Covering the doors made a SIGNIFICANT difference in the road noise. The vehicle is more pleasurable to drive and the total of 8 sheets (32 sq ft) probably only added 25 lbs to the vehicle.

Others may agree or disagree, it makes no difference. The only thing that matters is I am satisfied with the cost and the results. If this helps others, good.

kenchan

sounds good. also quiet riding tires make a huge difference.

i found great results running Bridgestone S04's and also Continental DW's.

falconfixer

OP, you should post up in this thread BTW the worst cars for road noise are the whites one with black interior. Complete opposite for black exterior and white interior. That's why I bought a 2 seat RWD sports car with a persimmon exterior and gold flake exterior...quiet like a coffin.

kfull

wtf? huh?

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2012 GM 6MT sports package | FI non res cf exhaust | K&N Drop Ins | Viper 3303 security system w/ tilt sensor | GTR start button | 35% rear 45% side window tint | Michelin PSS

Tazicon

I kind of like the road noise but I am a different sort of person. Sounds like you made a good investment, one my wife would probably appreciate if I did it as well.

Elan

Wait did I miss something?! Since when does color have anything to do with road noise?! Unless you are trying to make a funny?

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2009 370Z NISMO #477 | AAM Competition Short Tails | AAM Competition HFCs | K&N Typhoon CAI | Kenwood DPX300U | Rockford Fosgate PRIME R300-4 | Rockford Fosgate Punch P165 | Rockford Fosgate Punch P300-12 | Polk Audio db1001 | 15% Tints | GTR Start Button |

Chuck33079

A layer of closed cell foam over the sound deadening makes a big difference.

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falconfixer

Looking at it from a polarity perspective, like a magnet, white paint attracts the black pieces of asphalt better than say, magma red. Just like the different poles of a magnet attract each other. So in the end, more asphalt pieces on the road being attracted to a Pearl White Z means more road noise. The OP purchased a white car and filled it full of dynamat but that added unnecessary weight when all he had to do was by a black car. Black cars repel road debris.

Does your head hurt yet?