Will installing dynamat or similar products really make a difference in a new Lexus?

[jeeper2269 10+ year member]

Having owned several luxury sedans, I never installed any dynamat or similar sound dampening products, simply because the interior was already pretty quiet. However, I have had dynamat and other sound dampening products installed on every truck I have owned for the past ten years.

We are getting a 2014 Lexus IS 350 F Sport soon, and I was wondering, would it be worth the money to get some dynamat, or similar products to make it even quieter inside.

I know that some will reply asking asking what system I plan installing. So, all I have at this point is an idea of a 12" sundown in the trunk, and rainbow comps up front. The car actually has an 8 speaker system stock. So, I may tweak some things.

Just curious about your thoughts regarding sound dampening products. Is it worth it?

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[Jeffdachef 5,000+ posts]

Having owned several luxury sedans, I never installed any dynamat or similar sound dampening products, simply because the interior was already pretty quiet. However, I have had dynamat and other sound dampening products installed on every truck I have owned for the past ten years.
We are getting a 2014 Lexus IS 350 F Sport soon, and I was wondering, would it be worth the money to get some dynamat, or similar products to make it even quieter inside.

I know that some will reply asking asking what system I plan installing. So, all I have at this point is an idea of a 12" sundown in the trunk, and rainbow comps up front. The car actually has an 8 speaker system stock. So, I may tweak some things.

Just curious about your thoughts regarding sound dampening products. Is it worth it?

It'll help but if you want it extremely quiet, you'll have to do mass loaded vinyl too. got to Welcome to Sound Deadener Showdown | Sound Deadener Showdown there's a total guide to making your car soundproof.

I'd go with stinger roadkill, cheaper, thicker and more effective then dynamat.

 

[trumpet 5,000+ posts]

The car might already have some heavy materials to block noise, especially under the carpet. Your best value would be to treat the doors while the speakers are getting replaced, then decide if you need more sound deadening.

 

[T3mpest 10+ year member]

Get a system in there and see what rattles. Odds are the whole car won't need extensive deadening. A mass loaded vinyl product to block road noise is probably not worth the time or money. Did a complete barrier in my friends cadillac CTS and you could barely tell when it was done, wasn't a huge change for as many hours as it took. Stick to normal deadener and just apply it to things that are actaully rattling. That's how I did my cadillac eldorado and it worked very well.

 

[ccapital83 10+ year member]

I have a question in my 2014 civic the doors have silicone and the plastic covers all holes then over that this material covering it all so it's technically sealed and added padding for noise kill. So would it even help to take all that out and replace with stinger road kill at all?