😂 Who wants a yummy snack??? 😂

@KH-yv1bo

3 жыл бұрын

whatcha got

@crow-vz5lx

3 жыл бұрын

You mean the ear wigs?

@0420Junket

3 жыл бұрын

Special scoobie snack? Wink wink lol

@surroundedbyus

3 жыл бұрын

One areas you are going to want to put sound deadening material is on the roof of the Jetta, I have the exact same car there is a wood board up there that will rattle with any bass. May be worth it to do a video on how to drop the headliner and such.

@reggienhappiness8851

3 жыл бұрын

Would spray foam work?

I slapped some inside the walls of my clothes dryer. Then took the door apart and put it inside. Dryer is crazy quiet now!

@PoisonousMelon

Жыл бұрын

Thats actually a really good idea if there aren't any hazards that come with it

@robnation2475

Жыл бұрын

@@PoisonousMelon no hazards as long as your dryers disconnected when you do it. The stuff doesn't melt or create a fire hazard.

@robnation2475

Жыл бұрын

Another noise reduction trick: Zip-up and button your jeans "backwards" before throwing them in the drier.

@reykennedy5716

Жыл бұрын

@@robnation2475 I do that and have been trying to get my wife to do that for years. Common sense. She doesn't get it. That loud rattling drives me nuts.

@robnation2475

Жыл бұрын

Just used this stuff again on a pair of old school/gym lockers. Mucho better.

Guy is thorough professional, I haven't seen anybody putting so much research and effort into their work. Well done

The level of detail and logic behind these suggestions is impressive. It’s obvious you’ve been doing these installations for years !

I did this on a 2005 Ford explorer. It made a huge difference. Not only for the rattling, but the road noise and ride quality was drastically improved. The whole vehicle felt like it was better built and felt more “premium” than stock. It took me almost 2 weeks to complete though. What a pain in the ass! But well worth the effort!

I replaced my head unit, and ran the stock door speakers for a couple days . . they rattled and buzzed like crazy! I was a bit nervous to put my new speakers in but, when installing them I put sound deadener on the inside of the door, I put foam on back of the speaker magnets, a foam ring around the speaker, and used this foam tape that goes around where you mount the speaker. After watching this video, I will admit I did not do anything to the back of the door panel so, I will be doing that on my next day off! Anyways . . It now sounds amazing! I am very impressed, full volume and no buzzing or rattling! I now have my amp and subs intalled, an d I have not done anything in the hatch yet so, the subs are creating some rattles in the back. I plan on doing that here real soon, and can't wait for the results! This guy is very awesome! His work is very beautiful!! I really enjoy, and appreciate these videos!!

Just want to say that I absolutely love your videos! I consider them to be the best and most informative audio build series available!

im only 1 min in. but i remember watching you like two years ago when you were redoing your own small cars. this channel has gotten so much better! stoked for you dude!!!

UPDATE: If you are having trouble watching this video KZread is currently having issues worldwide. I have found that if you are on mobile and tap "click to retry" a couple times the video will load. Please reply here if you can see the video now! This video has a TON of detail on the full process of sound treating the doors, interior, trunk etc. Be sure to come back and watch!

@2good2betrue94

3 жыл бұрын

It's back up and running now!

@PTScrib

3 жыл бұрын

it's back up for me to * from the EU

@jameshowlett8811

3 жыл бұрын

What do you charge to sound dead a whole car??

@CarAudioFabrication

3 жыл бұрын

It would depend on the car, level of treatment, goals, many factors.

@jameshowlett8811

3 жыл бұрын

@@CarAudioFabrication something like you did in this video with a full size for door car from the 90s (town car/de vile)

Now this is sound proofing. Most installers I have seen only slap a few strips here and there, mostly behind the speakers. Obviously some things are budget based, but I think this is the real deal. Not just two strips on your boot lid.

I did that and more to my SQ build I did a few years ago. I siliconed any seams in the doors, and did 3 layers of deadener, then a layer of closed cell foam. Those doors were solid! Then I did carpet padding too under your feet, and got the whole vehicle undercoated, so you didn't get any vibration in the floor. Some SQ competitors will do even more. One guy had a couple hundred pounds of clay in the footwells of his regular cab pickup! Once they get into the clay or sand, in addition to the dynamat type materials and closed cell foam, then you know they're serious, haha. It's probably the #1 way to improve a system.

I've always had the impression sound deadening works well for just regular road noise as well.

@danabarnes4751

3 жыл бұрын

Totally does!

@OOICU812

3 жыл бұрын

Ask any luxury car.

@jrockaz548

3 жыл бұрын

It does just manufacturer being cheap

@TNoStone

3 жыл бұрын

I own an 06 honda civic lx sedan. The owner before me had a lot of road noise so he installed a shit ton of expensive sound deadening material throughout every nook and cranny of the car. Definitely helps with road noise and definitely helps with audio quality

@davethefish7653

2 жыл бұрын

It does. You just need to be sure you sound deaden the firewall. This is the source of 90% of the sound you hear from the front seat.

Around 5-6 years ago now the first time I did this sound deadening jazz I went way over the top. Pretty sure I went through 7 of the Dynamat megapacks, well over 100kg of dynamat. I double skinned the outside door panels, single layered both sides of the inner metal fab on the door. Used some tin or something and cut sections for the service ports and 2 layered up the 2 largest ports on the inside of the panel using the smallest remaining service port to do so, the last port was double or triple layered only from outside along with the 2 largest. Completely stripped the interior and boot of the sedan and single layered the floor with dynamat and then applied dynaliner. The entire parcel shelf has dynamat single layer on both sides with dynaliner cut and shaped for premium fit. Entire boot is single layered. At the end of it and particularly the doors my hands were a mess. Everyone comments on the lack of road noise in the vehicle. I run 2 Hertz SX300Ds in a CAF designed 42hz ported box off a RF 2500BDCP gains set 2000w RMS @ 50hz. Digital source all the way to Bit Ten D, gain structure is optimal. When tuned right and volume set correctly they are awesome, the transition to the mids is excellent. To this day a rattle I have not found. I suppose that is an argument for going over the top with sound deadening.

@CarAudioFabrication

3 жыл бұрын

Glad to hear you are enjoying the subwoofer blueprint designed box! There is definitely nothing wrong with going over the top, I just have received a lot of feedback in the past that tells me people think they have to spend the "high end" budget in order to even begin to see benefits which is not the case. Even an "entry level" amount of treatment goes a long way. Of course it won't be the same as the "high end" but every budget achieves a different end result.

@andrewjohn6853

3 жыл бұрын

@@CarAudioFabrication Legend.

@fryloc359

2 жыл бұрын

does it help to keep the sound inside the car as well?

16:38 One noise control measure you do NOT see in this VW (for cost reasons) are STUFFER BLOCKS, found in BMW, Mercedes-Benz, etc. - shaped blocks of grey closed cell foam OR dark grey polyester fill, like firm pillow stuffing. The latest version of this is NOISELITE, similar to THINSULATE used in cold weather jackets. When you work on a Hyundai Palisade you will see a small piece attached to each kickpanel.These stuffer blocks trap airborne noise as it moves around, not to dampen panel vibrations. We attack 2 kinds of noise: STRUCTURE-BORNE NOISE and AIRBORNE NOISE. The materials that stick to panels kill structure-borne noise (vibrating metal & plastic). The closed-cell foam used in SoundShield kills airborne noise that propagates into the interior from vibrating panels and other noise sources. You need to address both “sources” to be effective. In addition to these materials, I have started using stuffer blocks in my project cars. There are two more techniques I use that are more esoteric, inspired by Rolls-Royce.

@charlieaydin1377

2 жыл бұрын

I believe this is why he has labelled it as a ‘mid’ level upgrade. Most car audio garages in Australia will put butyl matting, then cover with focal hushmat or other similar closed cell adhesive back matting. Some even use mass loaded vinyl underlays to reduce road noise from the floorpan

Dude! Your “Midlevel” upgrade is 5 times better than most installer’s highest level sound deadening upgrades

Absolutely fantastic video, couldn't have been better in my opinion, thanks for making the effort to make this so comprehensive!

Thank you Mark, thanks to your Link I was able to buy the transfer tape for my Ford flex SQ System. I really appreciate it. Not a lot of installers like to share information on the tools they use but im glad you still continue to show us the secrets to car audio. I'm just a DIY guy for my own car audio projects but appreciate you a lot. Thank you my bro! 👊😁

14:10 The owner and founder of Hushmat spent about 45 minutes with me at a training (yes, I had tons of questions). As a degreed acoustical engineer, he said that there is no benefit above 75% panel coverage. When he was designing noise control packages for several OEMs, he had access to sophisticated measuring equipment to verify this. He further said that shops that cover 100% of a panel only do it out of fear that the client will think he is getting ripped off. Exceeding 75% adds unneeded mass to the vehicle. Dr. Porsche famously once said “weight is the enemy”.

@robotY0UTUB3

3 жыл бұрын

Wow super interesting, thanks alot for sharing that!

@K03sport

3 жыл бұрын

... and Mr. Colin Chapman said to "simplify, then add lightness". If only the manufacturer(s) covered 50% of the (floor) panel vs the 20% (or less) they typically do, I think we'd have better interior car environments across the board; not just in Lux brands like Lexus, Infinity, BMW, etc., etc.

@jonellwanger7258

3 жыл бұрын

@@K03sport well that’s where “luxury” comes in and that’s what you pay for

@K03sport

3 жыл бұрын

@@jonellwanger7258...to a certain (small) extent. There's way more to a luxury car than 30% more sound deadening/absorption material. Thats just covers the noise/environment aspect inside the cabin. There are still many more areas of the car that elevate it to the luxury level (something Mazda is attempting to do) such as the feel/driving characteristics, touch points, materials used, semi-exclusivity, technology, and even person-to-person interactions at the dealership.

@jonellwanger7258

3 жыл бұрын

@@K03sport ok, yes there is more to it. I was making a generalization... 🤦‍♂️🙄🤦‍♂️

I usually wrap a piece around the power window motor - it can make it slightly quieter.

@TIMEtoRIDE900

3 жыл бұрын

Good idea !

Theres always so much good information coming from this channel. I love it.

@K03sport

3 жыл бұрын

...agreed. Mark makes it look too easy. Makes me want to go buy/build a router table and acquire bits I'll rarely use.

Thank you so much for the valuable insight on sound deadening. You're an awesome teacher! Great job @Mark. I followed these instructions and wow! It did make a really big difference in the sound output from all 4 doors (JBL 6"-RL & RR, 6x9" FL &F R)

Sure isn’t many questions after watching this video. Be careful and take your time. Getting in a hurry will cause more frustration down the road. Really good job explaining what to look for and not overdoing it. Great job Mark! Tah dah! Stay safe mates!😊👍🏻😷

Thanks Mark! It's always nice to see installs done right.

I wish you had this 6 years ago when I started my car audio journey. I learned everything the hard way, great content as always.

@ungeniusnba3565

Жыл бұрын

Same brother, same. At least learning the hard way is better than never learning

Thank you sir for your awesome videos, your knowledge, your finances, and your dedication to car audio. Very inspiring I know I'm getting very accurate very detailed information when I watch your videos.

I thoroughly enjoy your videos! Common sense and being reasonable (law of diminishing returns) are a huge plus for me! Thank you!

Thanks for the tutorials, very thorough and easy to understand. Going to do my first DIY sound treatment on my '01 Highlander next weekend to bring those new Kicker KSS6504's and KEY amp soundstage to it's full potential! I already converted the rear 5-1/4 setup to a component 6.5" with tweeters mounted high and angled to the listener. Already sounds 1000x better than what the previous owner had, but I want to maximize my midrange upgrade since I can't go nuts like I did before with an insane system and lose my "dad cargo space"...lol...Anyway first time doing all this, it looks professional and clean so far, and your videos really help, my friend. Appreciate all your hard work. 👍

I love your videos! Very educational and inspiring for those of us who want to learn something new. I drive for a living and road noise is my daily nemesis! I experimented with my 2018 Nissan Titan I just purchased last month. It does have all terrain tires and I did expect it to be a little louder on the highways because of them. I used a decibel meter to measure how many decibels it was at 60 mph. Which it was about 65-75 db levels. I had to replace a blown speaker in the passenger rear door. So, I decided to upgrade and add some sound deadening material as well. I just finished everything yesterday. The sound level is exactly the same, but the radio sounds awesome and I definitely do not have to turn it up as high to hear it even with the road noise. I think I need to treat the wheel wells, firewall and possibly the floorboards. But that will be a whole new adventure for me! Thanks again for all of the great videos!!!

I did my doors on my tundra like this using your video, great work I've learned alot from you.

Love and support from Iran . Thank you for all of your advises and videos .I increased audio quality via your videos

deadening and electrical will make or break a system for sure 😎👍🏻

Great job! Excellent information and tips. Used your guidance doing my Malibu rear doors this past weekend. Thank you for what you do!

I just want to thank you for all your car audio tutorials. I will be working on sound deadening my 2012 Silverado single cab, looking forward to end result.

So much work, but worth it. Professional and quality. Nice work!

By Far One Of The Best Explained I Have Seen. Thanks You.

EXACTLY the video I’ve been looking for. Thanks so much man!

Good to explain how the Decibel scale works for your audience. Some content creators are very disappointed that the only achieved a 3db change which is really eliminating half of the original sound.

This is way more in-depth than I was ready for 😮 awesome!

Just subscribed. I've been watching since you revealed the secrets of car audio to the world. Can't believe I hadn't subbed before now. Thanks mark!

@CarAudioFabrication

3 жыл бұрын

Thanks for subbing

I just found your channel recently. Good stuff. You really know what you’re doing!

Very comprehensive array of materials and techniques used. Was educational

That 4 panels off at once is brilliant..I always thought I was saving time by doing one at a time..then life happens and don't get to the other ones as quickly then......

Great video! That stuff is also good for older vehicles that don’t have all that technology thought out for them already.

So, I got sick of having a factory stereo and started watching your videos. You are a savant when it comes to your trade. Truly impressive! If I had the financial means I’d have all my cars sent to you. The audio equivalent of Rembrandt.

Okay. Ima just like the video and hope it is good. Will watch it when KZread decides to comes back online..

@CarAudioFabrication

3 жыл бұрын

Working for me now!

Hey Folks, don't forget that if you're running old tires or if they aren't inflated to spec, you could be introducing a huge amount of noise into your car. Most likely more audible noise than you would be able to eliminate through any amount of sound deadening.

Excellent video, I am using this to sound deaden my eclipse!

Great video, learned a bit. Although I’ve learned allot from all your videos. I finally at 40 have gotten to build me a moderate system. As I’ve been adding, fine tuning and such I’ve referenced your videos many times, much appreciated. Been wanting to do this on my doors, back cargo area and the cargo door cause theres allot of rattling in the cargo area. But that stuff isn’t cheap. When you have a wife, adult daughter, grand-baby that your financially responsible for. Also a son thats on his own but still needs a couple hundred bucks every month or two it’s a little tough. I wouldn’t trade it for the world though, im very proud I’m able to, but things like this go on the bottom of list. The next thing I want do is build a custom box for my American Bass XFL 10” sub, in a prefab at the moment.

@Opographer

11 ай бұрын

Congrats 🥳 😊❤

About to do a system and soundproof my VW Amarok, this vid was great for most of what i was wondering about.

Thank you so much! This gave me the confidence to DIY it on my 2010 Charger rt... Which definitely has its fair share of rattles!

It is simply a wonderful explanation and good suggestions

Love the little metal card drop demo

This looks so much better than my Great Stuff spray foam job.

Once again watching bc I want to take over my dads car audio business

@CarAudioFabrication

3 жыл бұрын

Keep up the good work enhancing your skills! I hope to keep seeing you comment.

@bend1951

3 жыл бұрын

You staging a coup? 😁

So cool brother. I got a Kia Rio shit box that dones 294,000 KMs and still runs perfect. I'm going to do this. I've had an S500L Mercedes and my wife has an AC Schnitzer 540i. The sound in these cars was amazing. The Kia isn't a Mercedes but I can make quieter inside. Cheers from New Zealand. 👍😎

very clean install!!! thumbs up!

I like the new camera angle. The overhead is a nice touch.

So I finally checked out the vid... thanks for all your detail. Two questions I have: 1. With the skins, can it be installed in 50 degree weather? 2. The trunk treatment, is it recommended to leave the gray pieces already on the surface in place? If it was an older car, would you scrape those pieces out prior to install? Thanks!!

Man i have a 2015 Jetta this is a perfect video

I just found your channel today, 11/19/2022. I wish you were around 25 years ago when I first started stereo installation for my cars and home. I made many of the newbie mistakes you talk about, some even worse lol. Thankfully I did improve and got pretty good at it, but damn dude you're good!

The demo dropping a piece of metal had me sold.

Solid point!! Not everyone needs the best, thanks for the vidoes man!! Want to use Resonix CLD squares again but budget doesn't allow on the second vehicle lol

It also sounds quieter in the vehicle when the music is off. I’m gutting my Fiesta ST in the spring and giving it a deadening treatment like this. Might do the roof as well.

Just picked up SoundShield slim and the tape, thanks!

Hello Very nice 👍 ! I’m a tattoo artist , I love music , custom is what I like to do . I never done any custom on the trunk before . Few week ago I start playing around piece by piece using what ever I have . It’s not done yet a lot of people around my neighborhood thinking I’m crazy or something. I be in front of my apartment Sweating they wondering wth this man doing Lolzz . It’s almost there . Thank Mark for many excellent idea .

Ok i must say... holy crap. Ive ran 2 JL w6v2 10" for 7 years in my ctsv. Always sounded great. 2 weeks ago I watched the video and did the exact same treatment 4 days ago. Same material. Now I run a single 12" w6v3 and upgraded the door speakers with focals on the factory hu. The installation took 6 days (I have a daily driver). Not only does it sound louder with 300 less watts but the clarity is crazy. Added just shy of 45lbs but saved 66lbs with a rear bumper brace replacement. 1300 bucks later (including bumper brace) I weigh less but sound day and night better. I wish I had a channel so people understood this difference.

@jgizzy

22 күн бұрын

You do have a channel, friend! You can upload any videos you want at any time. I know you know this, but I just want to let you know it again. I'm glad your awesome CTS-V sounds better and is even lighter than before, what a wonderful vehicle.

@samuelfowler2157

22 күн бұрын

@jgizzy I know I can post a video on here but I don't have a channel that is out there for comparison videos. I don't have any befores anyway. Or a gopro lol I'm old. I'm doing an evo x right now that if I get my funds right will be done this summer. Since I haven't tore anything apart I thought about doing a forum picture guide. A video on here might be worth the time. Anyway I bought another w6 for a magic box but I'm thinking I want to try sundown. Do you have experience with these to compare the 2 brands? I'd like to keep weight off the evo but even with the stock rocksford sub, the trunk lid is sounding crazy. So I'll have to atleast soundproof that.

Hi Mark. Your videos are awesome and very useful therefore people from all over the world watch them. But in some part of the world some does not have access to these materials so can you mention some more general purpose material to use as sound deadening? Thanks

Awesome stuff! Just about as good as second skin 😊

I was waiting for the sound test

Great video! Will be doing deadening and heat insulation on my truck soon to take care of some extreme floor heat from the exhaust and hopefully taking out a lot of road noise. This video has given me a lot more ideas for my loud center console too.

OMG, It's the man they based the zucc android on! Great advice, thanks for the video. I'm about to do a jimny gen 3 but I'm quite a limited budget. Not sure I'll have enough to do all the panels but I'm going to do all the biggest flattest ones I can in the speaker cavities. There are HUGE cavities at the back that resonate even with 4" speakers.

I have an 18 inch sub box taking up the whole back seat. And my car is completely gutted. It sounds awesome. Very loud. Louder than it was in the Escalade.

You definitely know by now but those are actually two part clips. You unclick it once then pop it out. When you reinstall you line them up and click them in it pops the prints out. They also have that thin rubber the decouple. You did this vid to late I half hacked my Jetta in January. Still happy with my result but plenty of room for improvement. Gonna use this series. Thanks for what you do!

Tight! As always.

Too good, pride taken, always

Awesome video! Thanks

Awesome job!

Installed 80 mil sound deadening in my truck this weekend. Amazed at the level of outside noise reduction. I don’t have decibel level measuring equip. However, it’s extremely noticeable.

Tam profosyonel işçilik süpersiniz.

Just the video I was looking for! I've a 1979 Ford F250 supercab (extended cab) that I'm putting two 15s in.

Nice, I'm going to try a bootleg treatment myself in the trunk next summer. I want to put this in the rear bumper as well.

Thanks a lot for the information my friend

This is a CRAZY good video. Making me consider removing the carpets--only thing stopping me is the very strong lack of desire to remove the seats lol. Thanks for sharing your knowledge and expertise!

@roddydykes7053

Жыл бұрын

If it’s the seat removal that’s scaring you off of removing the carpet, chances are you aren’t ready, because seats are very easy to remove compared to the rest of interior

You’ve inspired me to try this with my vehicle. It’s an older car so I don’t think there’s any sound proofing

What do you think about creating a custom subwoofer box through the ski hatch and another woofer faced back, front or to the side (dependig on what looks the best) in the same box in the trunk?

Before I did you tube and had to figure out things for myself I spent a day sitting in the trunk of my car with a tube of liquid nails and a roll of tape playing my stereo and searching for rattles

This is a MID-LEVEL sound deadening upgrade?! For anyone wondering like I was: Six rolls of SoundShield - 6 x $119 = $714 Two rolls of SoundShield Slim - 2 x $59 = $118 Roller - $10 Punch Kit - $18 Clear Transfer Tape - $30 Utility Knife - $20 --------------------------------------------- Total - $910 So all in all for this "mid-grade" sound deadening treatment, you're looking at a total investment of $910 before you have invested a single minute of your time into a project like this.

@dillonkoch72

2 жыл бұрын

Use killmat I used it in my Honda it wasn't much I used 3 boxes or 150sq ft. For my 2 door coupe. 50mil and 80 mill were used. Double in the trunk and on the roof

Great video. It was very helpful. Did you make a video of the WrapIt product?

The snack part got to me😂 I love your videos

Vvvvvvvvvvrey good Information Thank you so much for this kind of video

So roughly $900 in materials is mid level? I guess high end would be 5 figures...great video and I like how you started it with tackling the economics of it.

Thank you Mark. I think you should also teach us how you make gourmet food in your fab kitchen!

@CarAudioFabrication

3 жыл бұрын

Maybe a future series!

Do you ever do CLD, CCF, and MLV or just stick to this type of product?

Awesome video. I'd like to see the car's ceiling treatment.

Great video!

Finally somebody with a litle bit quality in the job ;)

I just subscribed to your channel and I’m learning a lot. I’m a newbie at car audio but I have discovered that I love this stuff. I need to find out the correct way to amplify my speakers. I’m putting a system in a F-150. I put sound treatment inside my doors and floor. I have put in four 6x8’s low/midrange speakers and I have four 2-way crossovers and four tweeters. I have an Eq that will run to whatever amp(s) that I get. My 6x8’s are rated at 125 watts RMS and are 8ohms each. Should I get a big 4 channel amp and run each channel to the crossover then to the 6x8’s and tweeters? If I do it that way will this drop the ohms on each 6x8 from eight to four by going through the crossover and splitting each channel to the tweeters also? Would I have to bridge a four channel amp and run each side parallel to drop the 8 ohm 6x8’s to four ohms even with crossovers? I’ve started to think maybe I should get 2 amps because that’s 8 speakers and 4 crossovers all together. My last newbie question is about my tweeters. I know since the 6x8’s are rated at 125 watts RMS each then they can handle plenty of power but do I have to get high RMS tweeters even with the crossovers? I mean if I get an amp pushing 180 watts RMS to each channel will the crossover split the power evenly between the sub and tweeters?

Thank you. I have been needing a video like this because I am doing an Install soon.

for those playing at home and are probably doing a one off job. instead of buying the plastic roll to make templates, you can simply stick scrap paper together with painters tape to get your large surfaces, and all the finer edges, use folded over painters tape. then simply use a sharpie/pen/pencil to mark your shape out, then simply cut it out. the benifit id, if you stuff up an area you can simply stick more paper/tape to that area, retrace and recut. Then simply lay thr template onto the deadener, trace with a pen, cut with some quality sewing scissors! For trim clip, wiring clip, threaded hole areas etc, i usually fine a suitable object to use as a one size fits all template. For example, a simple trim clip hole in the door sheet metal, ive used a large flanged nut, even a glue stick lid, to trace a nice clearanced circle on the sound deadening, then simply cut it out with a razor blade. This way i get a consistent hole size template that will work for 99% of the trim clips i encounter within the vehicle.

Bringing back my worst nightmares of doing NVH repairs at Chrysler. Spending all day to fix every rattle and buzz you can find for the customer to not even know it was there. Next to water leaks, the NVH complaints were the worst. It has affected me so badly, that in my own vehicle I won't take easier roads to work because I don't want to develop rattles from bumps I can avoid. I drive my old chevy silveraydo then get in someone else's vehicle and cant stand all the noise. I spend the whole ride trying to find out where that noise is coming from.