You are obviously very intelligent, as well as have no tact.

Why all the flame throwing & high mighty speak against "newbies"? Are only the GM engineers allowed to post on this forum? This kind of mud-slinging on the CF is exactly why I visit sites like crossedflags & ls1tech more frequently lately.

just my .02

 

Not to take sides, but when someone receives a reply like this:

I pretty much think they're justified in responding with a few choice words. particularly if their "understanding" is called into question and they have the credentials to back up what they say.

My personal opinion is that I've found on this forum you can learn a lot more by keeping your mouth shut than you can by trying to flame people.
But that's just my two cents. What the hell do I know?

 

I was attacked first by someone who knows nothing about these cars.. I dont need tact here.. this is a forum.. and I respond in anyway I feel necessary.. there is no protocal here.. when someone tells me I obviously know nothing about tire noise and after spending 6 weeks doing detailed experiments using the latest GM equipment to determin my results.. and sharing it with hundreds of forum members over the last four years.. all with very positive results in reducing cabin noise. by better than 50 %... I have zero tire noise below 45 MPH.

 

No need to look down your nose at someone for the number of posts they made! We have all been newbies at one time, including you Forum King!

I disagree with you on the tire question too. I did not see any problem with my GY's until I replaced them. I only got 22K out of mine and I don't drive them that hard but I do drive them in extreme conditions like AZ heat. Having had the Michelins for 6 mos now I wouldn't take a set of GY's if they gave them to me. In case you've forgotten personal opinion is why there are more than one tire manufacturer! We all have a right to express those opinions.... newbie or not!

 

Sure we do. Each and every one of us. But as they say, opinions are like a particular bodily orifice, everybody has one. I have an opinion as well, but that doesn't mean I know diddly about how the Corvette or tires are designed.

Being a "newbie" isn't really the issue one way or the other. Being someone with the knowledge, experience and credentials to provide ALL of us with professional expertise is. Wouldn't it make more sense to ASK how someone came to the conclusion they did before saying they had "no understanding"?

Evil-twin is no "forum king", but he is a wealth of information for newbies and old pros alike. For my money, I appreciate his advice and information. Personally, I'm going out checking on prices of "dynomat" this weekend because what he's said makes a helluva lot of sense. Rather than flame him, I'd advise you to do the same.

 

I couldn't agree more with your statement about his knowledge, etc. I definitely respect his experience and knowledge. I have and no doubt will take his advise in the future but his approach on this one was 100% out of line! He's entitled to his opinion too but there is no need to flame some poor guy for a legitimate question. That's why we have so many out there. Believe it or not there are alot of people that are intimidated by this forum and folks that "know it all" and flame anyone who appears not to. We can always use "new blood" as they say.

 

I get anywhere from 10 to 50 PM's a day... most are from newbies... who are courteous and responsive to my opinion... there are areas of a C5 that I know very little about, and I say so but can offer an educated guess.. and there areas that I am a expert on... one of them is tires noise transfer and where and how to insulate a C5.. and Dyna mat is Not what I would use.. its too heavy, too costly, and putting it in a C5 in arizona could be a problem.. GM test all interior components to 160 F for form fit and function... dyna mat at 16oF gives off a slight tar smell..it is a tar based product.. it works well in cooler climates but its costly and heavy,,
there are two products that work well in a C5 they are frost King and Reflex.. frost king is not a good product for the tunnel area because it failed in 160 F cycle testing but it works well in other places the reflex works well in the tunnel area and the outer shell area... both of these products add less than 30 pounds to the car.,,.but will significantly reduce tire noise and heat.. when someone with 20 post and has been here two months attacks me... IM not going to puzzy foot around with him.. specially when he says I know nothing about tires and how their noise translates into a C5. Im newly retired..and spend alot of time here trying to help people with my 40 years of automotive technology..
I may bark alot but IM really like an old toothless police dog... like the dog.. I worked the beat for a long time.. IM not the tough guy at your jugular like I use to be as a young pup, but IM still a police dog and want some respect for my years of service..

 

I disagree Eddie.

Hell, you know me. I just got my vette last April; it's not like I'm a grizzled old veteran around here. It's all in how you approach people.

When I was a newbie (and frequently now as well), I'm the first one to say that I'm clueless about a particular subject and experts like Evil-twin and Patches would jump in with both feet to help. They were NEVER condesending or intimidating. The only thing that came across was the desire to help and to make me more knowledgable. As a result of their efforts, I find myself in a position to help others out a good bit today.

But when someone, ANYONE insults someone's professional qualifications, I think just about anyone would get their back up.

Matter of fact, I seem to recall some less than complementary comments YOU'VE made when the subject was throwing off on police officers.

 

Wow! Just saved me a bundle. I was planning on going out to find me some dynamat this weekend. Had no idea about the "tar smell".

I don't live in Arizona, but I suspect Georgia gets just about as hot frequently. What about "brown bread" and where do you find "Reflex"? This "Frost King" stuff I can get at Home Depot, right? ANd what about inside the doors?

 

Evil-Twin,
You've got some nerve poking into someone else's post and insulting the thread starter. While you have a valid point that insulation can make a car quieter, the post asked a specific question. He wants to know comparative differences in tire noise between the brands. While you profess to know everything and usually act like you do, you are being ignorant in this situation. THERE IS A GREAT DIFFERENCE BETWEEN TIRE NOISE OF DIFFERENT BRANDS. There, I said it too...I'm no newbie, and I've had multiple brands of tires on my car for comparison. I've got my facts straight, and the only eyes I'm attempting to poke my finger in are yours...

While it is nice to know some alternatives to make the car quieter, there is nothing wrong with trying to solve the problem at the root. If the tire makes noise and there are quieter tires that would make you happy, why go to the extra trouble and weight of insulating additionally? The fact is, some people don't desire a super quiet ride such as the Cadillac/BMW, but just want to quiet the tires down.

You profess to be the genius of many things...but you come across very arrogant and rarely consider other people's situations.

For what it's worth, I've been very happy with the Mich. Pilot Sports and the road noise (in a vert) was considerably lower.

 

 

and I've been jumped here many a time about those LE comments and took it in stride. That's all I'm asking ET to do. I don't question his qualifications and have definitely benefited a time or two from the info he's posted. My comments are based on his approach. I only ask that he think about it next time. We're all old enough that no one's going to change our approach at this point in our lives but we can temper it at times if someone gives an occassional tug on the "police dogs" choke chain.

 

I just purchased 2 bulk rolls of Frost King self adhesive duct insulation and plan to install in under my carpet, etc, in my '02 vert. to try to reduce the noise level. I just read previous posts about Dynomat and am wondering if it is significantly better. Also, where do you buy it and how much does it cost? Is it self adhesive?

 

My experience is that there is a huge difference between tire brands or moreso styles. I have had run-flats that came on my car and I put on Bridgestone Potenzas and

well.....

Huge difference in road noise. The potenzas are much quieter, MUCH!!!

I don't claim to know much at all about these cars or any other car for that matter, but I know tire brand or size or style makes a difference.

 

You seem to jump on me at every opportunity. here are the facts...
The original poster was looking for quiet tires... All I said was if your looking for a quieter cabin, dont look to tires because the ROOT cause is not the tires the root cause is the lack of insulation... The car is noisy with EMT's or with or Pilots... I dont know how many people have pmed me aboiut their disappointemnt with spending 1200 dollars on non run flats and the car was still noisy.. people buy new tires with soft supple rubber and equate that to a quieter ride than their 30,000 mile EMt.s only to find similar tire noise after the same mileage..
Iwas so unimpressed with the pilots as was Patches with his Perellis as far as reducing tire noise. Ive heard the same story from my close group of Engineers and tuners, and C5 techs on this forum..
you stand on the corner of a highway and have a C5 with EMT's pass you buy , and then have one with Pilots , pass you buy and you could not tell one from the other with respect to tire contact noise.. roll you window down and listen You will not find any quiet tires... I was trying to save the original poster the cost of new tires if his interest was only quieter tires.. it was just an educated offer, I did not tell him to insulate his car... I just offered an option.. the real dramatic difference in tire nosie transfer is in the insulation not the tires..A C5 would never be as quiet as a Lexus or Cadillac.. for all the reasons I said above about why their interior noise is so low.

 

What size of Potenza's did you purchase?

 

I don't doubt that a softer compound will make some difference, it's only logical that it would. An EMT has a very stiff sidewall that's bound to transmit vibration (and therefore noise) better than a softer sidewall.

On the other hand, does anyone think that if you mounted a set of Goodyear Run-Flats on a Lexus then it'd be as loud as a C5 inside?

If you don't buy into that theory (and I certainly don't), then what Evil-Twin is saying MUST be correct.

Corvettes are engineered to provide the most performance for the dollar and not to compromise for the sake of comfort. In addition to the insulation, a Corvette also has much firmer mountings that both enhance handling and transmit noise much more than something like a Lexus would.

Yes, a softer time would make some difference, but the thing that's really causing the problem would still exist. There's precious little between you and the tire making the noise. That comment above about there being only 1/8" of plastic between my ear and the tire really caught my attention. No WONDER the thing is loud inside.

So for me, particularly since I have a good set of run-flats that aren't apt to be worn out anytime soon, I'll be going the insulation route. You guys who are convinced it's the tires, feel free to go blow $1,200 to prove ET wrong. Be my guest. I'll be at Home Depot in the insulation department.

 

Um..... Stock sizes on the potenzas.
I have since changed wheels and tires and am not sure what sizes are stock now.
245's on the front
and
275's rear
I think.

 

I didn’t want this thread to turn into personal attacks. But I feel you took it in that direction Evil Twin. I had a simple question: what do you guys think are the quietest tires in run flat and non run flat tires? I have acquired a vast amount of knowledge from the respectful and non condescending advice of forum members in the past. I think a lot of newbies love the fact that we can truly get helpful answers from the members. But what irritated me Evil-twin, is you not only digressed from my question (to talk about something YOU wanted and know about) but you called another forum member “childish” and questioned his opinion because he doesn’t post as much as you? By the very nature of your responses to members in the past you seem more preoccupied with showcasing your knowledge then answering questions. Reading your responses are like listening to Kerry.

Moderator: Senator Kerry what are your feelings about unemployement?
Kerry: I’m glad your asked about healthcare, he’s what I would do….

Thread Starter: What kind of soap do you guys wash your car with?
Evil Twin: Glad you asked, there are several ways to keep your cabin quiet, did I mention I used to be an engineer for GM?…..

I’m just kidding of course, but in all seriousness, every tire manufacturer knows the tread pattern of some of their tires will create less road noise than others. For example, Yokahama markets a tire as their dB tires because they claim it is their quietest tire. Since I have no way to test each tire I just wanted the humble opinions of the forum member on tire purchases they were pleased with and felt were quieter than the OE Goodyear’s.

So far it seems like the Michelin Pilot owners are very pleased. Thanks for the advice guys.

 

Yo Aggie,

Despite the opinion that there is little difference in the noise of any tire, I believe that there are GREAT differences in tire noise among different tires.

I understand the tire manufacturers conduct tread noise tests in developing tires so that they can position and price their tires accordingly. Certainly, they must know something!

I understand that Lexus and Mercedes spend lots of time to select the OEM tire that gives a quiet ride(as well as taking into consideration handling and cost). These companies don't do it merely to waste money. They certainly don't just slap on any old tire!

Every tire test I have ever read in Road and Track and Car and Driver has rated tire noise. Certainly,these magazines have some credibility in the sport and in the industry.

Tire Rack's surveys rate their tires for Noise. I do not think that Tire Rack does this merely to add to their overhead costs, and they surely have some expertise in the tire field.

Most who have switched from Goodyear EMTs to anything else under the sun have reported less noise. Certainly, they are not all lying!

Finally, in my experience, Michelin A/S runflats are much quieter than Goodyears.