[feelfree]

Hi, I'm new to here and I would like to know how can we keep the tires noise from intruding inside the cabin? Some of my friends have sent their car to do the roar killer package at KL Auto, but their feedback is nearly no improvement, slightly improvement when the speed above 100km/h. My concern is when driving through certain road, my Yokohama A1 will generate a lot of noise and intrude inside the cabin even at low speed, around 60km/h.

[sunyatsen]

Hi, I'm new to here and I would like to know how can we keep the tires noise from intruding inside the cabin? Some of my friends have sent their car to do the roar killer package at KL Auto, but their feedback is nearly no improvement, slightly improvement when the speed above 100km/h. My concern is when driving through certain road, my Yokohama A1 will generate a lot of noise and intrude inside the cabin even at low speed, around 60km/h.

If the Roar Killer can't do much, the only alternative left is to change to silent tyres. Some of the popular ones are the Michelin Primacy LC, Bridgestone GR90, Toyo C1S, Yokohama DB etc. Changing to higher profile and narrower tyres will be helpful too as you reduce the contact patch and more air insulation (but not many will go for this alternative as it compromise the vehicle's looks and to certain extent the handling prowess). But you get better ride comfort and quieter ride.

If you ask KL Auto, they will ask you to do more soundproof (maybe the thinsulate) and more autofoam and cost varies in which in most cases would cost you an arm and a leg (if not both)

[madman1188]

If the Roar Killer can't do much, the only alternative left is to change to silent tyres. Some of the popular ones are the Michelin Primacy LC, Bridgestone GR90, Toyo C1S, Yokohama DB etc. Changing to higher profile and narrower tyres will be helpful too as you reduce the contact patch and more air insulation (but not many will go for this alternative as it compromise the vehicle's looks and to certain extent the handling prowess). But you get better ride comfort and quieter ride.

If you ask KL Auto, they will ask you to do more soundproof (maybe the thinsulate) and more autofoam and cost varies in which in most cases would cost you an arm and a leg (if not both)

if all fails, get yourself a good set of ear-plugs!
but joking aside, I do agree with Dr Sun..... get a good set of donuts..... but bear in mind, the noise will come back after certain rolling time as the wear sets in.....
have any1 ever wonder, when we got our 1st car, no1 ever complained about noises, clink and clank here and there? I believe as we progress, and as we start doing more to our car, we tend to silence 1 part but amplifies another.... so you keep chasing the noises that irritates you most.... but once you have eliminated out all noises, then you would be in a cocoon, with pressure building in the ear everytime you are in the car...... is that the ultimate goal?
personally SP would be a never ending quest, so trick up your ride to your personal preference which corresponds to the ability of your plastic!

[TSIJetta]

if all fails, get yourself a good set of ear-plugs!
but joking aside, I do agree with Dr Sun..... get a good set of donuts..... but bear in mind, the noise will come back after certain rolling time as the wear sets in.....
have any1 ever wonder, when we got our 1st car, no1 ever complained about noises, clink and clank here and there? I believe as we progress, and as we start doing more to our car, we tend to silence 1 part but amplifies another.... so you keep chasing the noises that irritates you most.... but once you have eliminated out all noises, then you would be in a cocoon, with pressure building in the ear everytime you are in the car...... is that the ultimate goal?
personally SP would be a never ending quest, so trick up your ride to your personal preference which corresponds to the ability of your plastic!

Haha, either a good set of ear plug or invest on a good set of ICE. Volumn up when you find the noise is loud, can save some $$$ too.

Just a stupid advise.

[vr2turbo]

If the Roar Killer can't do much, the only alternative left is to change to silent tyres. Some of the popular ones are the Michelin Primacy LC, Bridgestone GR90, Toyo C1S, Yokohama DB etc. Changing to higher profile and narrower tyres will be helpful too as you reduce the contact patch and more air insulation (but not many will go for this alternative as it compromise the vehicle's looks and to certain extent the handling prowess). But you get better ride comfort and quieter ride.

If you ask KL Auto, they will ask you to do more soundproof (maybe the thinsulate) and more autofoam and cost varies in which in most cases would cost you an arm and a leg (if not both)

Even with a good set of quiet tyres, they do roar on different road surface. I have always been a performance tyre user, therefore to test quiet tyres, I tested my friend's car with PLC. It was quiet on normal road, but roar as loud as my performance tyres on the Federal Highway, therefore it does not means it is quiet all through....

[vr2turbo]

Haha, either a good set of ear plug or invest on a good set of ICE. Volumn up when you find the noise is loud, can save some $$$ too.

Just a stupid advise.

Not really stupid.
I have noisy exhaust and noisy performance tyres, but my radio is always on, so I don't really hear the noise....

[rallychamp]

yep...tyre was the main factor...

also stock factory sound proofing material not that good....


u can try opt for silent tyre and add a few layer of tar underneath and inside the tyre well of your car....

dynamat and autofoam anyone???

[vr2turbo]

yep...tyre was the main factor...

also stock factory sound proofing material not that good....


u can try opt for silent tyre and add a few layer of tar underneath and inside the tyre well of your car....

dynamat and autofoam anyone???

To really quieten the noise, then need to soundproof wheel well, firewall and boot too....

[multipla]

I did the roar killer and another door package at KL Auto, and yes, as what Sunyatsen said, if no improvement, they will ask you to add another package etc and in the end it will cost you a bomb with small improvements. I stopped myself after 2 packages...still NO improvement AT ALL!

Here it is, some members with the same car and spec seems to say they have vast improvement!! I am not sure if it is due to psychological (because they paid thousands RM?). I had a friend who builds and sells amplifiers and accidentally soldered 2 wires wrongly...the buyer paid thousands for it and said got vast improvement. So since the buyer is happy, he did not bother to resolder them correctly, although he did ask if there is any problem with it

Another option, which I find has vast improvement is to spray the wheel arch with soundproof stuff AND add sikadamp (or others brands) to the bottom right and left corners of your interior firewall (means near the accelerator position). I did this in Lucky interiors in Kepong. I went there for interior upholstery and they also mentioned they do this soundproofing stuff as well. I was then running on Hankook V8 215/45/17's.

[madex]

Yup, stock factory especialy CKD have a lot difference vs CBU when it comes to soudproofing/weather proofing materials. Maybe not by purposely. But due to weather conditions, cold weather country need better insulation from coldness and icy. Thus CKD do not need those mats, foams, insulations and striping etc.

IMO, soundproofing at wheel arces only can't be enough to reduce tyre noise intrusive into cabin especially at high speed on rough road where the tyre roar coupled with the wind tunnel effect will intrusive into the cabin via frame undercarriage, side sills and boot. Thick floor rubber/bitument/mats will help i suppose, but i believe the car will be put on weight. Autofoam however, is light and at the same time, improve ride quality, handling and stability. Then you can put a thin insulation mat on floor if you want.

But remember, you can never get the sound 100% proof and of course, if you have Waja, don't expect it will run like Mercedes.