Corolla Soundproofing

[JasonM]

I recently added noise deadening pads to my 23 TS in the wheel arches, doors, boot and under bonnet.  Definitely an improvement probably 20% reduction in noise going by ear not measured.  Other side benefits are better sounding sound system, improves door shut clunk and reduces outside noise from other cars.  Changed tyres to Mitchelin Primacy 4+ and again a similar improvement but not quite as much as I hoped for.  Finally I need to do the floor where I think a lot of road noise leaks into the cabin.  Rather than removing seats and carpets I am going to apply under the car beneath the spray trays which are a lot easier to remove than carpets.  I think then it will be as good as I can achieve and perfectly good for me for a car in this price range.  

[JayCee88]

On 4/26/2024 at 6:55 PM, JasonM said:

I recently added noise deadening pads to my 23 TS in the wheel arches, doors, boot and under bonnet.  Definitely an improvement probably 20% reduction in noise going by ear not measured.  Other side benefits are better sounding sound system, improves door shut clunk and reduces outside noise from other cars.  Changed tyres to Mitchelin Primacy 4+ and again a similar improvement but not quite as much as I hoped for.  Finally I need to do the floor where I think a lot of road noise leaks into the cabin.  Rather than removing seats and carpets I am going to apply under the car beneath the spray trays which are a lot easier to remove than carpets.  I think then it will be as good as I can achieve and perfectly good for me for a car in this price range.  

What sound deadening pads did you use for the wheel archers? Is it weather proof? 
I did think of applying sound deadening to the doors but a bit concerned about removing the door cards, as I worry they will squeak. 

[shufman]

On 4/24/2024 at 7:41 PM, cea said:

Thanks for the very comprehensive reply, brilliant. A few questions if you don't mind.  Did the £425 include the fitting and what sort of tyres (I have 18" Falkens which are reputed  to be noisy) have you got? I downloaded a dB measuring app and at 70 mph it reads low 70s, undulating, not half loud especially compared to my 2017 Avensis diesel estate which I had previously.

Thanks

Carl 

I changed the Falkens to Michelins and noticed a big improvement 3 db or so on rough roads at 70 mph. No difference really on the smooth stuff but the ‘step’ is a lot less jarring. I wouldn’t bother with extra soundproofing but it’s up to the individual. 
 

The noise is generally about the same in all similar cars with big wheels in my experience. 

[cea]

Lots of excellent replies , thank you all, good to know it's not just me. It seems to be a 50/50 split around extra soundproofing.  Shufman, what sort of Michelins did you buy?

I've noticed Yokohama do a tyre with a 67db rating, I know this is the outside noise but it stands to reason that if it's quieter outside, it's quieter inside. Be good if somebody has these and can give some feedback.

Cheers Carl

 

[50p]

Does anyone else experience wind noise (from outside!) whilst stationary? As I mentioned before, depending on which way it's blowing.

[TonyHSD]

28 minutes ago, 50p said:

Does anyone else experience wind noise (from outside!) whilst stationary? As I mentioned before, depending on which way it's blowing.

Imagine a wind noise from outside when stationary, what would be while in motion? 
I do get that even I can feel a air stream and it comes from around the door handles or B pillar area, I note this when relaxing in the car with slightly inclined seat and when is windy outside. However my car is more silent in comparison to some other Toyota models that feel like side windows left half open. 

[50p]

40 minutes ago, TonyHSD said:

Imagine a wind noise from outside when stationary, what would be while in motion?

Exactly, but no-one at the main dealer can hear anything, except the service manager that left.

Whilst my vehicle was not being fixed I had a Yaris loan car, that also had the same wind noise and didn't have a moon roof so I guess that rules out one source.

[shufman]

5 hours ago, cea said:

Lots of excellent replies , thank you all, good to know it's not just me. It seems to be a 50/50 split around extra soundproofing.  Shufman, what sort of Michelins did you buy?

I've noticed Yokohama do a tyre with a 67db rating, I know this is the outside noise but it stands to reason that if it's quieter outside, it's quieter inside. Be good if somebody has these and can give some feedback.

Cheers Carl

 

Hi Carl,

they’re Primacy 4s. Had new ones on from before Xmas and they’re Primacy S1s but look the same. Just a better tyre, loads more grip. 

[JasonM]

Hi JayCee, I used Amazon Kilmat pads which are waterproof under the wheel arch liners directly on the steel bodywork.   Taking the door cards off is very easy and have no squeaks.   

[JayCee88]

On 1/28/2024 at 3:41 PM, Niky said:

I finally decided to install a hood insulation pad on my 2022 1.8 TS. Bought one from Ebay for £30ish, which according to the listing wouldn't fit the TS, but never the less I decided to give it a go. Not very professional job, but with a bit of adjustment I manage to fit it in place, and I am happy with the result.

The engine's roar is a bit softer when pushing the car over 3.5k revs, and generally the car is a bit less noisy on the motorway, once again as the noise from the engine is a bit softer. I wonder why don't Toyota fit those as standard???

So far I've got all 4 doors + most of the boot insulated with Noico 2mm sheets, all 4 corners with GoodYear EGP2 tyres and now the hood insulation pad. 

Next project is to add door rubber seals. Few people here have done this already. Can someone tell me which shape will be most effective, please. There are so many of them I got no clue which one to go for

Generally the noise is much improved already, but because of that the wind noise around the door's windows is more present and quite annoying. 

I’m interested in your progress with door seals as I am considering same option. 
Most of the time I drive gently so not too bothered about engine noise, however would like to improve on cabin noise levels. I constantly have to turn up the stereo above 50mph. 

[Niky]

Hi, @JayCee88

Haven't touched anything else yet, only whatever I've done few months ago - see previous page

I believe those door seals do help, though.  Not an incredible result, but a bit less wind noise from the doors/windows area

I've said few times already, I believe most of the noise is coming from the rear, particularly the boot on the TS. Soundproofing the boot, together with quieter tyres will reduce the noise. Do not expect to become a S class of course, it's a Corolla, nevertheless it will be more pleasant to live with. 

[TonyHSD]

Toyota cars has some simple let down in their construction and I don’t know why or how they can missed on that but their new cars sounds like they have a hole into the boot spare tyre well. 
I had a drive in new BYD Atto 3 electric Chinese car and I can tell you that this thing literally silent , up to 40mph there were no road noise, no wind noise, nothing, it’s like the car is stationary. 
What took my attention, heavy doors, a lots of door seals all around, soft interior door cards. , the car feels solid like Audi, Mercedes’ or BMW’s. 
The previous electric car was ioniq and there were noises inside while driving even with Michelin cross climates, not as much as Corolla but like my Auris, but this Chinese crap its like an s class. 

[Trewithy]

On 4/28/2024 at 9:23 AM, cea said:

I've noticed Yokohama do a tyre with a 67db rating, I know this is the outside noise but it stands to reason that if it's quieter outside, it's quieter inside. Be good if somebody has these and can give some feedback.

 

You would expect them to be quieter inside but apparently that isn't the case.  Some time ago Auto Express had a review of tyres and Goodyear Efficiency Grip 2 were the quietest as measured inside the cabin.

[TonyHSD]

18 hours ago, Trewithy said:

You would expect them to be quieter inside but apparently that isn't the case.  Some time ago Auto Express had a review of tyres and Goodyear Efficiency Grip 2 were the quietest as measured inside the cabin.

These are the most technological car tyres on the market and my favourite ones. On my third set with those and won’t change for anything else including their all season or much anticipated Michelin cross climates. 
 

[Niky]

Finally managed to spare 2.5 hours to remove the side cards in the boot and put some soundproofingon on the wheel arches (1.8 TS). Not a beautiful job, but a good result. Also put a second layer in the boot - light foamish material

[nielshm]

I've just been to Le Mans, and the french motorways (with toll) are just superb. 

Silky smooth surface, no holes, bumps or repairs, and very little road noise with 80-85 mph.

Coming to Germany is another story.... Loud, noisy, bumpy with any speed, just a pure pain in comparison with the french.

[ThomasL]

Isn't that something to do with the French wanting us foreigners out of their country as fast as possible?

[Babar13]

@ThomasL no, it doesn't 😄 (as a French)

[Tomv]

On 2/3/2024 at 10:51 PM, Tomv said:

Thank you for the information. Actually my plan is to place the seal at the edge of back door to seal the gap between the door which imho should have bigger impact on the wind noise. But I’m still struggling to find the right seal shape. 

I was at Lexus dealership and had some time, so I checked cars at parking lot and all Lexus had seal between the doors (the blue mark ať the picture. That is the way how to make you pay premium price for Lexus with better soundproof that cost Toyota 10£ for rubber seal  🙂

[cea]

I decided to complain to Toyota about this, after several emails the reply was 'We can't control the quality of rhe road surface'; my reply was 'You can control the quality and amount of soundproofing you fit to the cars'. I also stated that these are British built cars for the British market.

No more emails, case closed. I didn't expect to get anywhere but it was worth a try.