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Old Sep 15, 2010 | 03:04 AM
  #61  
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Originally Posted by goatts
Toyo Proxes is good middle of the road tire. Not the worst. Not the best. I believe it has a higher treadwear rating than the GY's so it will have a little less grip.
I have the Toyos on my '05 A4. The car has 561RWHP and the ZToyos won't hookup...so looking at the RE11 or Handkooks...
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Old Sep 15, 2010 | 12:12 PM
  #62  
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Originally Posted by saparr
Had a set of ps2 zp put on my 06 with z51. I can't say enough good things about these compared to those supercar GY. If some of you guys want to take the chance on non run flats that is certainly your decision. My car handles great, the tires are quiet, they stick to the road and I have piece of mind about flats. Don't compare these tires with the badyears, they are a completely different animal. If these are good enough for a 125K dollar ZR1 then they are good enough for me.
The NCCC autocross champions for our region, man and woman, have a 2008 Z51 Coupe. They started out with the Supercar tires but didn't like them and switched to the non-runflat PS2 (runflat wasn't yet available). They liked those more, then wore 'em out and switched to the PS2 ZP which they said performed better than the non-runflat version, running on courses that were both smooth and bumpy. They also said the difference in ride between the runflat and non-runflat PS2 was minor.

Interestingly, they went back to some other non-runflat this year. Reason? Cost! They said their current non-runflats weren't any better than the PS2 ZP but cost a lot less.
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Old Sep 15, 2010 | 12:39 PM
  #63  
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Originally Posted by C6~Missle
How do you know he would not have done better with non-RF's?Treadwear ratings are not regulated. They vary between manufacturers. Its only an indication of tread wear. RF tires get MUCH noiser and harder with age/mileage than non-RF tires. Believe what you want. There is a big difference.. I experienced both.. have you?And how many race series use run flat tires? Thats ridiculous. They compromise ride and performance for the convenience of not having a spare.
Don't know for sure. But look at the cars that are faster. There are not many. Just my opinion and your opinion in this case.

Your race car example is bogus. Why would a race car ever use runflats? They don't use street tires anyway, they use racing tires.

And yes, I've used both and I race with them. Can't tell any difference. But read post #62 for another opinion.

Last edited by goatts; Sep 15, 2010 at 12:58 PM.
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Old Sep 15, 2010 | 12:42 PM
  #64  
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Originally Posted by Rock'n Blue 08
Enough hogwash for one post! Ask the tire boys ABOUT STIFF SIDEWALLS ON RUNFLATS! SSHezz!
I did ask the tire boys. Read my post #44. Also, our club has a tire machine and we've installed runflats and non runflats with it so I have some experience.

So I'm afraid the hogwash is coming from Rock'n Blue 08. SSHezz!

Last edited by goatts; Sep 15, 2010 at 03:59 PM.
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Old Sep 15, 2010 | 12:53 PM
  #65  
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Originally Posted by FastGhost
I have the Toyos on my '05 A4. The car has 561RWHP and the ZToyos won't hookup...so looking at the RE11 or Handkooks...
That's a lot of hp. I don't think that any street tire will hook but that may be a good thing. When you go to the dragstrip you could take some slicks but then you risk breaking something.
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Old Sep 15, 2010 | 12:54 PM
  #66  
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Hot topics:

Auto or Manual
F55 or Z51
Seat Belt or no Seat Belt

RF tires or NRF tires Woo Hoo .. now we're rolling.
Who cares .. some like RF's .. some like NRF's

Pick your poison
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Old Sep 15, 2010 | 12:59 PM
  #67  
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My ? to keyplyr is have you tried ANY other RF's than the OEMs. It's common knowledge that the GY RF's are not well liked, however to lump all RFs in and say they are no good is not accurate at all. Maybe the other brands RFs are better. Sounds like people are happy with the Michelin RFs.

It's like saying because Breyers chocolate ice cream is bad that all chocolate ice cream is bad.........

Pricing...yes they are more expensive, and they should be, they offer features that a normal tire doesn't.
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Old Sep 15, 2010 | 01:00 PM
  #68  
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Originally Posted by Gearhead Jim
The NCCC autocross champions for our region, man and woman, have a 2008 Z51 Coupe. They started out with the Supercar tires but didn't like them and switched to the non-runflat PS2 (runflat wasn't yet available). They liked those more, then wore 'em out and switched to the PS2 ZP which they said performed better than the non-runflat version, running on courses that were both smooth and bumpy. They also said the difference in ride between the runflat and non-runflat PS2 was minor.

Interestingly, they went back to some other non-runflat this year. Reason? Cost! They said their current non-runflats weren't any better than the PS2 ZP but cost a lot less.
Good info.
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Old Sep 15, 2010 | 01:02 PM
  #69  
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Originally Posted by Dif
Hot topics:

Auto or Manual
F55 or Z51
Seat Belt or no Seat Belt

RF tires or NRF tires Woo Hoo .. now we're rolling.
Who cares .. some like RF's .. some like NRF's

Pick your poison
You forgot 87 octane gas!!
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Old Sep 15, 2010 | 01:04 PM
  #70  
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Originally Posted by goatts
You forgot 87 octane gas!!
Good one
Lets start a list and make it a Sticky

Auto or Manual
F55 or Z51
Seat Belt or no Seat Belt
RF tires or NRF tires
87 or 93 Octane
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Old Sep 15, 2010 | 01:30 PM
  #71  
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When my C5 was new, the run flats were loud. They got louder as they aged. At 24,000 miles, and ten years old, I replaced them with Michelin A/S ZP's. The Michelin's were a huge improvement over the GY's; quiet, rode better, did not follow the ruts in the road. The Michelin's were a better tire then the GY's were when new. When I traded the car two years later, the Michelin's were still as quiet as they were when new.

I'll shortly be installing new tires on my C6 Z06 and will most likely go with the Michelin PS2 ZP. I'm waiting on reviews of the new GY GEN2 tires that are OEM on the 2011 Z06 and optional on the 2011 Grand Sport before I make my final decision. Strange that the 2011's have been out for three months, but not a single report, that I'm aware of on this forum, from a member that has real world experience driving on the GEN2 tires.
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Old Sep 15, 2010 | 01:46 PM
  #72  
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Originally Posted by keyplyr
@ WHT

Sorry, the valve stem replacement was on the GY RF. It was the RF that gave me the problems, one of many - adding to the numerous reasons why I upgraded to better tires. The mod list in my profile was changed then.

Go yell BS at someone who cares.

You have to think quicker than that.

Why didn't you simply drive your car to a dealer or tire shop? Can you explain why you had to walk a mile, borrow a cell phone and call a tow truck if your car still had GY runflats?

A blown valve stem doesn't cause a GY runflat to fail (no air is no air - and it doesn't matter if it was caused by a puncture or a blown stem ). Also, given your hatred for the OEM runflats, you would have certainly made a big deal about it if this occurred with runflats on the car. The only BS is yours.

Originally Posted by keyplyr

Yesterday, while driving on a San Diego freeway a tire valve stem blew (I recently change them out [poorly it seems]) and I pulled off to the shoulder. No other option but to call roadside service. I pressed the blue OnStar button, heard the prerecorded greeting but no one answered. I tried several times, no answer. I tried my hands-free phone and once again got the prerecorded greeting but no one answered.

So I put on the flashers, stood around for a while then decided to hike to a phone (no cell phone until next week.) Walked about a mile to a convenience store where after some discussion I was able to use his phone to call a tow truck which I paid for out-of-pocket. I also phoned OnStar several times and no one answered other than the prerecorded menu options.
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Old Sep 15, 2010 | 01:49 PM
  #73  
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Originally Posted by revo1059
My ? to keyplyr is have you tried ANY other RF's than the OEMs. It's common knowledge that the GY RF's are not well liked, however to lump all RFs in and say they are no good is not accurate at all. Maybe the other brands RFs are better. Sounds like people are happy with the Michelin RFs.

It's like saying because Breyers chocolate ice cream is bad that all chocolate ice cream is bad.........

Pricing...yes they are more expensive, and they should be, they offer features that a normal tire doesn't.
Good question, and the answer is no - I have only used the OEM Goodyear Eagle Runflats (not the supertire version on the Z51.)

In most of my posts I do identify that it is GY RF that I have the aversion to, but it is true that I have often condemned runflats categorically, and of course possibly unfairly because as you pointed out, I have not tried all makes/versions.

It's the nature of the beast that I see as the theoretical abuser when it comes to performance; those thick sidewalls. I can't *feel* the response to leaning into tight, fast turns the way I can with the several other tires I've raced with on my car and the rented Corvettes at a couple tracks.

However, as technology moves along and improvements are achieved, at some point I *may* in fact give runflats another go.


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Old Nov 28, 2010 | 11:39 AM
  #74  
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Anyone have any problems with FIRESTONE FIREHAWK WIDEOVAL 99W 295/35-18 $221.31 & 265/40-17 $141.97 as a daily street driver?
My F1's are wearing down and heard these are good tires. Thoughts....
Here is the link:
https://www.onlinetires.com/cart.php
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Old Nov 28, 2010 | 12:39 PM
  #75  
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Originally Posted by goatts
The sidewalls are not any stiffer than non runflats. Compare the two sometime when they are off the rim. I could not tell any difference.

Oh, and are you sure they get loud and hard after 6 months? I thought it was 7 months?

Think about what you're saying. Why would runflats get harder any sooner then non runflats?
No clue here period!
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Old Nov 28, 2010 | 01:03 PM
  #76  
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I've got the Kumho KU36s on my GS and they're great when it's warm, but when it's cold MAN do they perform differently. The tires slide, and the car swerves left and right slightly. Be advised that they need to reach operating temperature but when they do, they're awesome.
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Old Nov 28, 2010 | 10:14 PM
  #77  
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Originally Posted by thundavett
Anyone have any problems with FIRESTONE FIREHAWK WIDEOVAL 99W 295/35-18 $221.31 & 265/40-17 $141.97 as a daily street driver?
My F1's are wearing down and heard these are good tires. Thoughts....
Here is the link:
https://www.onlinetires.com/cart.php
If these are the runflats, they actually had (still do, I think) an inscription on the sidewall saying to not repair them, and to discard if driven below 16 (?) psi. A runflat that you can't run flat.

But they sell a road hazard policy pretty cheap, for a DD they are a nice compromise of price/grip/life/comfort. Don't try to use them at cold temps or in any snow, I had a set on our C5 and couldn't get up the driveway with less than an inch of snow. The same is true for most high performance summer tires.
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