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  1. P

    Ear pain/Pressure help

    Yeah it wasn’t an easy decision to come to. I WANTED to love the car. In theory I DO love the Y, but in practice it just didn’t work out. It’s incredibly frustrating because it checks so many boxes I had for a vehicle (Although I want my dang ventilated seats!!) I spent quite a bit of time...
  2. P

    Ear pain/Pressure help

    Well I’ve resolved this problem for myself by selling the car to Carvana. Amazingly they paid so much over list that even with sales tax and fees factored in, I only lost a few hundred bucks. Seemed like the wisest way to cut my losses and move on. Perhaps when the new 4860 battery cells with...
  3. P

    Model Y road noise/rumble primary cause

    Thanks for this! It certainly does appear that the primary spikey resonance is more tamed in your "after" recording; it's still present, but no longer standing out above the rest. All other recordings I've seen/done from inside a Model Y have a very distinct low-frequency resonance clearly...
  4. P

    Model Y road noise/rumble primary cause

    Would you be willing to post a video clip of driving at approx. 30MPH on less-than-perfect roads so I could do an FFT analysis on it? I’d love to see the results.
  5. P

    Model Y road noise/rumble primary cause

    Musk sure seems to corroborate the OP’s sentiments in this interview with Sandy Monroe. Specifically the section discussing structural battery packs around the 22 minute mark. Musk Monroe interview He essentially admits the cars have poor torsional rigidity due to the battery packs and that...
  6. P

    Ear pain/Pressure help

    Hey sorry for the delay checking these out, I'm out of town at the moment. Just got a chance to fire up my portable rig and take a peek. So interestingly it seems you've shifted the peak from around 35Hz to around 46Hz, but it's very much still got a loud peak at that low frequency: At...
  7. P

    Ear pain/Pressure help

    Is there anyone who has solved the booming problem who would be willing to post a YouTube clip here from inside the cabin while driving roughly 30 miles an hour on a somewhat bumpy road? I’d love to evaluate the audio and see what kind of results people have gotten. iPhone or android video...
  8. P

    Ear pain/Pressure help

    Here's the FFT analysis of your recording. Looks very similar to mine, with the resonant peak at around 34.5Hz
  9. P

    Ear pain/Pressure help

    So the service center installed the rear hatch bumpers and extra trim on mine. It reduced LCpeak decibel readings by about 3dB but average level by only 0.5dB. So I did some before-and-after recordings while driving on slightly bumpy roads at 30MPH and looked at the FFT. Here is before...
  10. P

    Model Y road noise/rumble primary cause

    Thank you very much for this. Given the fact that this issue seems to plague similarly designed EVs (Audi E-Tron, Mercedes EQC, Mustang Mach-E to lesser extent) this is clearly as yet an unresolved problem with modern EV SUV design. Ultimately very frustrating but also very enlightening. I...
  11. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    Consumer Reports rates the Bridgestone Turanza QuietTracks as a good bit quieter than the Veredesteins. Check them out and see what you think.
  12. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    When searching for the quietest possible tire option I came across the Bridgestone Turanza QuietTrack. Anyone have thoughts on these...
  13. P

    Ear pain/Pressure help

    Alright time to get super-nerdy. I came across this Swiss study from 2017 about how to deal with low-frequency resonances in passenger cars. The effectiveness of the suppression of low frequency acoustic resonances with porous sound absorbing structures of multifunctional upholstery...
  14. P

    Ear pain/Pressure help

    Alright everybody, time for fun with automated translations! yesman686 posted two links to videos on Weibo, in Chinese, discussing the issue. Well I played a bit on the internet and managed to create some truly horrific translations from the Chinese audio into English text. See if you can...
  15. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    I reached out to Mountain Pass Performance and Unplugged Performance to ask if their respective Comfort Coilovers would add any improvement to this booming road noise issue. TL;DR - nope. Here is the response from MPP: While they improve comfort, there isn't anything special about them that...
  16. P

    Ear pain/Pressure help

    Did you line the headliner plastic itself with deadener like Dynamat/ResoNix or did you just put some lightweight closed-cell foam in the cavity? The headliner itself needs to be stopped from resonating. There's already some foam back there which clearly isn't doing anything because it has...
  17. P

    "Acoustic glass" windshields on new Model Ys?

    From what I understand if you've had Tesla replace your windshield in the last few years, they've put on an "acoustic glass" windshield as the replacement. However it's not clear to me if the windshields currently being installed on new Model Y's are considered "acoustic glass" or just regular...
  18. P

    Ear pain/Pressure help

    I think with the dynamat type stuff you only need 25% coverage to meaningfully improve resonances. Do you think that would be possible?
  19. P

    Ear pain/Pressure help

    So I was just sitting in my model Y in the garage and decided to tap on some things to see what was dampened and what wasn’t. Bumping on the glass roof and windshield with the underside of my fist (pinky side) immediately caused a booming sound just like what I experience when driving, but not...
  20. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    I’m an audio engineer. I’d be happy to evaluate any recordings you have. The main thing to understand is that a recording will not allow me to evaluate loudness in the car itself (dB SPL, or sound pressure level, the real loudness in the world). That can only be determined using a dB meter and...
  21. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    This Extech SL510 is a perfectly good professional dB meter and accurate to within 1dB. It’s not the best thing ever; I’d love something with some more modern capability like a built in FFT readout and an easy way to get records into a computer. Unfortunately meters with those features are...
  22. P

    Ear pain/Pressure help

    Can anyone explain adjusting the height of the hatch catch? I yanked off the trim and identified the torx bolts, pulled those out and the hatch catch came right off. But I can’t see anything that would allow for any kind of adjustment of its height.
  23. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    So I actually tried my sennheiser noise-canceling headphones and they actually made things worse because they can barely do anything to cancel out frequencies so low, but in fact cancel everything else out. So the net effect is that the booming rumble seems even louder and worse since it's the...
  24. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    This is a common misconception. Sound functions as longitudinal waves, not transverse. The waves of compression and rarefaction wash over you, regardless of how long the wave is. And the louder the sound wave is, the higher the pressure (and in this case subsequent ear pain) irrespective...
  25. P

    Ear pain/Pressure help

    I think it's safe to say that a lot of this issue is caused by the road noise from the tires coming through the shocks. Looks like Honda has come up with an interesting fix for this issue by placing special resonators around the wheel: Honda Global | Noise-reducing Wheels - Picture Book...
  26. P

    Ear pain/Pressure help

    What are the chances that all this boominess and rumble is due to the new unibody rear frame? Tesla Model Y gets one-piece rear frame + News from Tesla China - electrive.com Is the subframe bolted directly to this without any isolation? If so, no amount of sound dampening material would...
  27. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    Here's a short video I recorded earlier today showing my decibel meter set to dBC (more accurately measuring low frequencies) while I drive 20 MPH down an average-quality neighborhood street in Los Angeles. Noise levels average 95-97 dB and go as high as 105 dB at one point! Geez! Not good.
  28. P

    Ear pain/Pressure help

    Yes this exactly. Set your dB meter to the dBC scale or unweighted scale instead of the dBA scale and the level will astound you. Here's a short video I recorded earlier today showing my decibel meter set to dBC while I drive only 20 MPH on an average neighborhood road (a bit bumpy). Levels...
  29. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    the tire pressure was originally 42. I tried lowering to 38-39, and it didn’t really make much difference. Checking noise levels with my dB meter set to dBC I’m still getting 97-102 dB on slightly imperfect roads at just 20 MPH! Not good...
  30. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    I'm not too confident in my abilities to do the soundproofing work myself. Does anyone know of a reputable shop in Los Angeles that does this kind of work?
  31. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    So I adjusted the four rubber bumpers for the rear hatch, no change. I lowered the tire PSI to 39, no change. Has anyone tried either of those after-market suspensions and noticed any improvement?
  32. P

    2021 Model Y lots of road noise rumble on stock 19's - any advice for improvement?

    Just got my 2021 Model Y AWD LR with the stock 19" wheels & continental tires, and I really like everything about the car except the road noise rumble! It's my first EV and first Tesla so I spent most of the limited test drive focusing on all the other new stuff like one-pedal driving and...

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