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ZL1 Wheels/Tires Wheels and tires discussion for ZL1

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Old 12-08-2011, 10:45 PM   #1
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Attention ZL1 owners-to-be! Cold-Weather Bulletin on Eagle F1 G:2 tires

We recieved a clarification to the questions that have been asked about cold-weather storage of the Ultra-High Performance tires that come equipped on the ZL1 from the factory.

Fbodfather mentioned this earlier today, but I wanted to stick it in a thread of its own, too.

Please note that this informational bulletin is from Goodyear, the manufacturer of the tires, and not General Motors directly.

**Also, I would highly recommend you read through the full bulletin and not take the picture alone at face-value.
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Old 12-08-2011, 10:49 PM   #2
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Thanks for that Dragoneye.
In all my years of competition I have never seen glass shattered tires from such a moderate temp.
Never did like Goodyear tires.
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Old 12-08-2011, 10:52 PM   #3
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For what it's worth, I also received this message from Goodyear after a personal info request about the ZL1 tires a few weeks ago...it seems to me to be a copy/paste from a standard tire-care literature. Possibly the "Proper Procedures for the storage of tires" bit they mention above.

Quote:
Thanks for contacting our website.

The best place to store tires is in a clean, dry, sunless area away from
strong air currents. Even though the rubber used to make tires is
formulated to resist effects of sunlight, ozone and water, the life of a
tire can be extended if exposure of these elements is minimized during
storage.

Stack tires flat so that the bottom tire will maintain its shape
Wrap each tire with an opaque polyethylene covering to minimize the
effects of oxygen and ozone. Most Goodyear retailers have storage bags
made specifically for this purpose
If tires are being stored outdoors, they should be raised off the
storage surface
If tires are being stored while mounted on rims, they should be inflated
to 10 psi
If they are put in storage during warm weather, the initial inflation
pressure should be about 15 psi to offset the pressure drop during cold
weather months

How Not To Store Your Tires

Don't store tires in an area that is wet, oily or greasy
Don't store tires where they are subject to direct sunlight or extreme
temperatures
Don't store tires near electric motors or other ozone-generating sources
Don't store tires on black asphalt or other heat-absorbent surfaces
Don't store tires on or adjacent to highly reflective surfaces such as
sand or snow

If you plan on storing your tires on the vehicle, we recommend inflating
the tires to the maximum inflation stated on the sidewall of the tire,
and moving the vehicle a few inches every couple of weeks ( to change
the footprint)so that it doesn't develop flat spots.

Barbara Hummel
Consumer Relations
I don't foresee a huge issue. The lacerations, imo, would only be caused by extreme amounts of heating/cooling cycles during the few truly arctic weeks of winter, probably coupled with dry air, ozone, etc....they look tortured, not made of glass, imo.

Based on all this info...I'll store it somewhere dry (ie, not outdoors), and inflate them to max pressure. Roll the car 1/8 wheel-turn every month until the snow melts.
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Old 12-08-2011, 11:09 PM   #4
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I was slightly relieved to read the bit about (paraphrasing) "If the [stored] tires have been exposed to temperatures less than 20° F, let them warm up to a minimum of 40° for at least 24 hours."

That would seem to indicate to me that the rubber wouldn't be damaged by the cold temps as long as it was allowed to warm up properly before being put under stress.

Even in El Paso last winter we had three consecutive nights where the temp got down to 3-5 degrees below zero. My garage was below 20° F.

If I have to I can move to Florida... I like the beach, but then - SUDDENLY: Salt !
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Old 12-08-2011, 11:19 PM   #5
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Quote:
Originally Posted by Dragoneye View Post
For what it's worth, I also received this message from Goodyear after a personal info request about the ZL1 tires a few weeks ago...it seems to me to be a copy/paste from a standard tire-care literature. Possibly the "Proper Procedures for the storage of tires" bit they mention above.



I don't foresee a huge issue. The lacerations, imo, would only be caused by extreme amounts of heating/cooling cycles during the few truly arctic weeks of winter, probably coupled with dry air, ozone, etc....they look tortured, not made of glass, imo.

Based on all this info...I'll store it somewhere dry (ie, not outdoors), and inflate them to max pressure. Roll the car 1/8 wheel-turn every month until the snow melts.
Good post.

My only concern was cold weather storage when the tire is on the vehicle, not off like this bulletin describes. It's still a little cloudy in regards to that subject.

I'm going to do the same thing as you, inflate them to max, and not worry about it. I may even invest in these

http://www.raceramps.com/flatstoppers.aspx

I don't think this is going to be an issue, but I'm sure it would be a good idea for everyone to visually inspect their tires after a winter storage just in case.
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Old 12-08-2011, 11:25 PM   #6
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Quote:
Originally Posted by Shurenuff View Post
Good post.

My only concern was cold weather storage when the tire is on the vehicle, not off like this bulletin describes. It's still a little cloudy in regards to that subject.

I'm going to do the same thing as you, inflate them to max, and not worry about it. I may even invest in these

http://www.raceramps.com/flatstoppers.aspx

I don't think this is going to be an issue, but I'm sure it would be a good idea for everyone to visually inspect their tires after a winter storage just in case.
Pricey...but those look like a great idea I'll have to look into!
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Old 12-09-2011, 12:12 AM   #7
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This is kind of a letdown but I am glad you guys are bringing attention to this matter. Does GM recommend a tire for all season use that would work well on the zl1, have they tested any other tire combinations? I don't wanna sound like a jerk when I say this but I guess GM assumes that if you buy a 50k plus vehicle and want to drive it conditions not suitable for the stock tires, you can afford replacements or an alternate set? Seems fair!
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Old 12-09-2011, 12:55 AM   #8
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Just looked on tire rack and noticed there are no all season tires for the rear. There are a few choices for the front. Any ideas? Maybe run the same size all around for winter? Of course this would mean buying another set of front wheels.
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Old 12-09-2011, 12:55 AM   #9
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Car is designed as a performance car not a winter car. It is not intended as a daily driver by design
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Old 12-09-2011, 01:17 AM   #10
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Car is designed as a performance car not a winter car. It is not intended as a daily driver by design
But winter is when some of us get the best performance...
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Old 12-09-2011, 02:12 AM   #11
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So if we have an indoor space to store the car but it isn't heated then our first set of tires is basically screwed?
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Old 12-09-2011, 09:12 AM   #12
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Saved this thread under favorites, thank you for posting this.

I've planned from the start to have my car stored away for the winter time anyways. But now is the concern about how the tires will hold up during the winter months. It can get pretty cold at times around here.
Now I'm thinking I need to find a heated storage unit and keep the tires
on. Or take the rim and tires off and place them inside, and place the car on some kind ramp that does not require tires. Third option like others have said is to buy the other set of rims and hope that some kind of winter tires would work. But that gets kinda pricey.

Again thx for the post, I'm hoping my car will arrive to me after all the cold weather is gone for this winter season.
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Old 12-09-2011, 10:23 AM   #13
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This thread is Sticky worthy!
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Old 12-09-2011, 10:47 AM   #14
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This thread is Sticky worthy!
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Old 12-09-2011, 11:09 AM   #15
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Fact is, for years, there have been Summer-only Tires manufactured and sold successfully all over the world...in all manner of climates...by many Companies. And they're described as Summer-only for a reason!

These warnings are ignored at your personal peril !!

But they're also not "new" news...
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Old 12-09-2011, 11:23 AM   #16
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This thread is Sticky worthy!
I think so too. It's an important issue and it's likely there will be much to follow up with going forward on this issue after the cars start getting delivered and used in different climates IMHO.
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Old 12-09-2011, 11:38 AM   #17
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I thought this warning was initially exaggeraged, but not now. I thought you could drive summer tires in the winter, but just had to be careful and expect loss of traction.....never thought the rubber could split. I share the same concern as collins motorsport in that my garage is not climate controlled, so the temps inside will easily dip into the 30's or lower when the peak of winter arrives. So, I guess the best the average owner cold do is just move the car in neutral a few inches each week until the temps get above 40.

Also, the first ZL1s will be delivered in the winter months, so how is the owner going to transport the car home???
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Old 12-09-2011, 12:00 PM   #18
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So if we have an indoor space to store the car but it isn't heated then our first set of tires is basically screwed?
No,they are saying that the rubber gets brittle under 40* & may split if driven hard. A parked car has no worries.

I've known the rules of Max Performance Summer tires for years. But this is the first time I've ever seen one split as a result of cold weather driving.
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Old 12-09-2011, 12:13 PM   #19
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the only way around this issue if you want to drive the car in the winder is get a set of stock or aftermarket 9" rims with 275's. that is as wide as I have found in an all season.

I had the same inssue with my mustang when I upsized the rear tires.

I think the real issue with these tires well be rapid change in temps.

On thing to remember though is these tires are worth $$$ you could always dismount and sell them. I did with my f1 supercar runflats on my 08 coupe becasue the straitline grip on those tires is bad. I upsized to 305 invo's the day I got the car. way better strait line grip and I got more out of my stock tires than the new ones cost.
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Old 12-09-2011, 12:30 PM   #20
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Fact is, for years, there have been Summer-only Tires manufactured and sold successfully all over the world...in all manner of climates...by many Companies. And they're described as Summer-only for a reason!

These warnings are ignored at your personal peril !!

But they're also not "new" news...
Very true!

Im not sure a lot of people have actually had "summer" only tires until the last few years. Most new cars come with all seasons.... even some all seasons are not good in the cold!

I sure as heck wont forget the first and only time I got stuck in a freak snow storm with summer tires..... Lets just say the way back down the mountain had some serious pucker factor.
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Old 12-09-2011, 12:44 PM   #21
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If anyone is wanting more info on winter tires read this.....


http://www.camaro5.com/forums/showthread.php?t=106945
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Old 12-09-2011, 02:04 PM   #22
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.... Lets just say the way back down the mountain had some serious pucker factor.
Nice linkage, Mac.

Yeah, I was bringing a '76 Lincoln Town Car full of Sunday School kids down the mountain from a ski trip once... I kept about five car lengths between us & the car ahead because it had been snowing hard all day. At crawling speed we still broke loose and the car started doing a 180° turn - very very slowly.

When we were looking uphill I figured marginal sliding friction was better than no friction so I just braked. We stopped less than a car length before we bumped the car ahead.

The kids thought I did it on purpose, it happened so slowly. They said it was awesome. There was no chance of injury, but it was slicker than snot on a doorknob, that's for sure.

That's what your phrase, "pucker factor" reminded me of.
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Old 12-09-2011, 03:09 PM   #23
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When the Gen-3s arrived with those lovely greasy Gatorback 16s, circa '85, I had a death-defying 5-mile drive when the first snowfall fell...all 2" of it !!!!!! A usually 7-minute drive took me TWO HOURS...and four pushes...

Summer-only means EXACTLY that...
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Old 12-09-2011, 04:34 PM   #24
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I wonder if they will delay production because of the colder temps in Canada?
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Old 12-09-2011, 05:41 PM   #25
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I wonder if they will delay production because of the colder temps in Canada?
That makes me wonder when they have them parked outside waiting to get loaded. Then being driven onto transporters/railcars. Can the tires handle that abuse?
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