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It’s going to be in the 30s...Dunlop Sport Max tires

Old 12-07-2018, 01:26 PM
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hughp3
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FYI I spoke to Hoosier about cold a slicks. They said for slicks do not run below 40 preferably not below 45.
Old 12-07-2018, 01:33 PM
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abiazis
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On dry colder than 45 degree days...drive the car at 5/10s and you will be more than fine......just use it to go from point a to b and to run it some......nothing crazy over the speed limit even on 35mph roads and you will be absolutely fine.....if it rains, park it.....
Old 12-07-2018, 01:42 PM
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Originally Posted by Jimmy-D
Woke up this morning and 15 F in Chicago.

Boy - I hope we can get a few 40 degree plus days soon
Things are looking up over here, Jimmy!




These Colorado winters really suck.
Old 12-07-2018, 01:57 PM
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Originally Posted by Jimmy-D
Woke up this morning and 15 F in Chicago.

Boy - I hope we can get a few 40 degree plus days soon
there's no precipitation in the forecast for almost a week, and Mon-Wed look to have highs in the Mid 30's. Good enough for me.
Old 12-07-2018, 02:10 PM
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The other alternative is to put winter tires on the car and not worry about the temps
Old 12-07-2018, 02:15 PM
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Originally Posted by cobrien
The other alternative is to put winter tires on the car and not worry about the temps
But since there are no winter tires that fit (within tire manufacturers’ recommendations) the original 12” rear wheels, you need to spring for winter wheels too (11” wide rear)...

OZ makes some that aren’t too pricey. Porsche factory option are from Turbo S (forged):

https://www.suncoastparts.com/produc...1G2GT3WWS.html
Old 12-07-2018, 03:55 PM
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cobrien
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Originally Posted by GrantG

But since there are no winter tires that fit (within tire manufacturers’ recommendations) the original 12” rear wheels, you need to spring for winter wheels too (11” wide rear)...

OZ makes some that aren’t too pricey. Porsche factory option are from Turbo S (forged):

https://www.suncoastparts.com/produc...1G2GT3WWS.html
I think Yokohama makes winters that fit, but I'm not sure how good they are. Definitely going with a separate set of wheels is the better and easier way to go, just change out the wheels/tires in late fall and early spring. I think you can get away with a 20" wheel in the rear, which opens up a lot more tire choices. And a narrower wheels is helpful in the snow.
Old 12-07-2018, 05:33 PM
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You guys talk about "damaging" tires, from the cold temps I assume. Kindly educate me. How does that happen, why does that happen, and at what temp? I have MPSCs.

Thanks!
Old 12-07-2018, 06:22 PM
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cobrien
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Performance tires are designed to work in warmer temps...60 degrees and higher generally. The tread compound is designed to handle heat and to provide maximum grip at higher temperatures. When the temps drop, the rubber gets harder and less flexible and you lose grip. When it gets cold enough for long enough, the rubber can become so hard that it cracks under stress, which ruins the tire. Obviously as you use the tire it warms up, but cold pavement and cold air can suck the heat out of the rubber faster than you can put it in, especially if you're just driving on the street. Winter tires are just the opposite...the rubber compound is designed to stay soft and flexible in cold conditions, so they maintain grip. But, as temperatures get higher, the rubber is too soft and can't handle the heat and deteriorates quickly. All-season tires are somewhere in between...ok in the heat, ok in the cold, not great in either.
Old 12-07-2018, 06:39 PM
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Originally Posted by Palting
You guys talk about "damaging" tires, from the cold temps I assume. Kindly educate me. How does that happen, why does that happen, and at what temp? I have MPSCs.

Thanks!
Supposedly can crack the rubber at -10C (or +14F) or below. This happens whether driving or just storing in a place where they are exposed to this cold.

Tirerack says not to store below 32F:
https://www.tirerack.com/tires/tiret...jsp?techid=221

Michelin info:





Old 12-07-2018, 06:46 PM
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Originally Posted by cobrien
I think Yokohama makes winters that fit, but I'm not sure how good they are.
Yokohama makes a rear that is wide enough for the rim, but it's 29" diameter which is too big (315/35/20). Stock size is 27.2" and I think that is different enough (nearly 7%) to cause issues with ABS (along with gearing and other potential problems).
Old 12-07-2018, 07:13 PM
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Originally Posted by GrantG
But since there are no winter tires that fit (within tire manufacturers’ recommendations) the original 12” rear wheels, you need to spring for winter wheels too (11” wide rear)...

OZ makes some that aren’t too pricey. Porsche factory option are from Turbo S (forged):

https://www.suncoastparts.com/produc...1G2GT3WWS.html
Pretty sure the OP has a 3RS. The set you linked to is for gt3. The GT3RS OEM winter wheel set from Suncoast looks like fits 12" rears:

https://www.suncoastparts.com/product/SKU991GT2WWS.html
Old 12-07-2018, 07:17 PM
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Originally Posted by GrantG
Yokohama makes a rear that is wide enough for the rim, but it's 29" diameter which is too big (315/35/20). Stock size is 27.2" and I think that is different enough (nearly 7%) to cause issues with ABS (along with gearing and other potential problems).
I took a quick look at Tire Rack and it shows a Yok winter 325/30/21 rear and 265/35/20 front, which should be stock RS sizes. Again, I have no idea how good of a winter tire they are. I've had great luck with Blizzaks and Pirelli winter tires, so I personally would stick with them (and a second set of wheels).
Old 12-07-2018, 07:28 PM
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Sorry guys, I was thinking of GT3, not RS

Intersting that it’s easier to drive an RS in winter than GT3
Old 12-07-2018, 07:44 PM
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Originally Posted by GrantG
Sorry guys, I was thinking of GT3, not RS

Intersting that it’s easier to drive an RS in winter than GT3
I've got Pirelli winters on my stock GT3 wheels, no issues . 911s are great in the snow with the right tires

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