Tyre noise reduction

At last!

Here(1) is some tips on how to kill the awful road noise in your Supr1.doc

Put(2) as much as you want on here and up in the region of the top of the arch.doc

Its (4)handy to do both sides and boot area in one.doc

In(5) this pic above the plastic isn.doc

more!

(6) Sealed should look like this.doc

(7)You can also do some deadening under the back seat.doc

If the Mod would like to expand these pages instead of links ? :-)

the missing page 3 is here

Refit the seatbelt (3).doc

To finish off, next time you buy tyres get Bridgstone RE050a, very very quiet, and outperform any previous bridgestone effort by a long way.

Did something similar to my S14, the voids inside above the rear arches are notorious for amplifying the road noise, so people tend to use the space for stealth sub installs and fill the space up with foam, or alternately use expanding foam, works quite well.

What happened to doc no.3?

-Ian

ooops i needed to modify it, took it down and couldnt get it back up in order, I'll send it to you tonight after work and you an slot it in fthe right place for me. p.m. me yor e mail address Ian.

Did something similar to my S14, the voids inside above the rear arches are notorious for amplifying the road noise, so people tend to use the space for stealth sub installs QUOTE]

 

The sub ideas ar very good for some models, in the case of the Supra I think JL do some 6.5 inch subs which could make life easy and keep the boot free. Glad someone else has worked on this too.

 

Single most important factor is getting the voids air tight as possible, the better the seal the better the result.

Just thinking aloud here:

Could there be a deliberate reason why these voids and openings exist?

Perhaps for evaporation of condensation, air expansion after airbags go off, that sort of thing...

I, too, find the supra's road noise annoying, but is it merely an oversight or last-minute costcutting?

No reason, loads of german cars have them sealed. I have sealed them for 13 years now, has airbags etc go off, so you can do this with peace of mind that your safety is not compromised.

The sub ideas ar very good for some models, in the case of the Supra I think JL do some 6.5 inch subs which could make life easy and keep the boot free. Glad someone else has worked on this too.

 

Single most important factor is getting the voids air tight as possible, the better the seal the better the result.

JL do 6" subs, I'm going to look into the price of a pair of these, as it could be an ideal solution for me.

http://mobile.jlaudio.com/images/9313.jpg

http://mobile.jlaudio.com/products_subs.php?series_id=23

Good stuff mate! I have some lead lined NVH barrier foam stuff from where I used to work. Think I'll give this a go and see how quiet I can get it.

Thats the best you can get for the "under the boot carpet" bit and arch liners. If you can get strong enough glue that can stick summer heat (grip fill?) it would be excellent on the outsides of the quarter panels too. I one used it on a 95 Celica at it was quiet as a mouse easting cheese!. Just no good for sealing inner skins or doors though.

Another cheap option is to use flashing tape, it sticks well and damps out noise and costs about a third the price of Dynamatt;)

...or perhaps thermal underlay for carpets. Flexible, acoustically deadening, cheap too.

I also use it to wrap hoses so they don't get heatsoaked.

JL do 6" subs, I'm going to look into the price of a pair of these, as it could be an ideal solution for me.

 

[qimg]http://mobile.jlaudio.com/images/9313.jpg[/qimg]

 

http://mobile.jlaudio.com/products_subs.php?series_id=23

To get the best from them you would need to make a very rigid mount and seal the quarter best possible. I have seen this done with fiberglass, which provided a rock solid mount and non flex enclosure. It was heavy but sounded super. The fiberglass idea would let you tune the volume. Might even go this way next time myself. O dear, another photo "how to" guide lol.