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Old 07-26-2006, 08:14 AM #1
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The story of the mountain and the snowflake

Link:CanadianDriver Story on the Symbol

The story of the mountain and the snowflake
by Craig M. Lee

Canadian symbol for winter tires spreads around the world


Once upon a time they built a highway between Vancouver, British Columbia, and the resort community of Whistler, high in the Canadian Coastal Mountains. The road was very steep with lots of curves. So lovely was it that they called it the Sea-to-Sky Highway.

It was very beautiful, but, it was also very deadly.

Often, skiers depart Vancouver with its nice green lawns, only to find the Sea-to-Ski Highway covered in heavy snow and very slippery. Many of the holidayers are in vehicles ill-equipped for the road conditions - cars shod only with all-season tires.

Along the side of the road are barriers used by the RCMP to stop and warn drivers whose cars don't have proper snow tires. Sometimes, the Mounties close the road altogether.

Despite the RCMP's measures, in 1995 there was a string of fatalities along the Sea-to-Sky Highway, also known as Hwy. 99. Investigating officers identified the problem as a lack of snow traction, coupled with lack of information for motorists to identify whether they had true snow tires or just "all-season" tires, which are a compromise.

These Mounties brought the problem to the attention of coroners. In 1995, Vince Cain, the chief coroner of British Columbia, wrote to Transport Canada asking that a method be developed to let non-experts know when they were looking at a true snow tire, that is, a tire suitable for severe conditions and not an "all season" tire.

The letter crossed the desk of John Neufeld, an automotive safety engineer at Transport Canada in Ottawa.

Now, the 14 or so major tire companies are all brutal competitors. They're headquartered all over the world. They each have their own standards and closely guarded testing secrets. Building consensus among them as to what constituted a repeatable test that would identify tires that performed to a certain acceptable standard - well, that wasn't easy.

Working with the Rubber Association of Canada and the Rubber Manufacturers Association in the U.S., Mr. Neufeld identified a particular test procedure of the American Society for Testing and Materials (ASTM). This test evaluates tires in real-world snow conditions.

After a lot of discussion, all the tiremakers agreed to adopt that recommended ASTM standard, along with the pictograph of a peaked mountain with a snowflake inside it. The new standard was announced in February 1999.

Today, if a tire bears the pictograph, even drivers who cannot read well will know it meets specific snow traction performance requirements and has been designed for severe snow, ice and winter conditions.

The actions of certain individual Canadians have led to improved winter driving safety for anyone in Canada and the U.S. willing to take advantage of it. And the mountain-snowflake symbol is spreading to Europe and beyond.

A click on the Transport Canada Web site brings up the following important information, along with a list of makes of tires that meet the winter tire standard:

- Vehicle handling will be improved when identical tires are installed on all four wheels

- To help maintain control and stability of your vehicle in slippery conditions, snow tires must be installed in sets of four.
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Old 07-26-2006, 08:23 AM #2
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From Transport Canada website:

"Winter tires

Look for the peaked mountain with snowflake symbol when shopping for winter tires. Tires marked with this symbol meet specific snow traction performance requirements and have been designed specifically for use in severe snow conditions.

Tires marked
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Old 07-26-2006, 08:25 AM #3
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SEVERE SERVICE EMBLEM

The following helps explain why it is now required and some history. What's the difference between the snow traction of a M&S (mud and snow) branded tire, a traditional all-season tire, and a dedicated winter tire. While many consumers probably aren't sure, it can be the difference between getting home...or getting stuck.

The traditional M&S definition for tires is a geometric based formula. Those tires meeting the formula are branded on at least one sidewall with the letters "M" and "S", (e.g., M&S, M+S, M/S, MS, etc.), which were first used to differentiate the knobby bias ply tires intended for use on muddy, and/or snow covered roads from the straight rib tires used on early cars or trucks. Then when radial ply tires were also found to deliver more snow traction than the straight rib bias ply tires, the tire company marketing departments saw an opportunity, and the term "all-season tire" was born. Supported by advertising, all-season tires have presented an unspoken promise that they, throughout their life, can provide traction for all-seasons...through spring's rain, summer's heat, fall's cooling and winter's snow. And while this combined offering made all-season tires popular, the problem is that this geometric definition doesn't guarantee performance or any degree of safety in winter driving.

On February 1, 1999, The U.S. Rubber Manufacturers Association (RMA) and the Rubber Association of Canada (RAC) agreed on a performance based standard which will help differentiate dedicated passenger and light truck winter tires from all-season tires. The standard will be used to identify those tires which attain a traction index equal to, or greater than 110 (compared to a reference tire which is rated 100) during the specified American Society for Testing and Materials traction tests on packed snow. This new definition was first requested by Transport Canada (Canada's counterpart to the U.S. Department of Transportation) about 2 1/2 years earlier. A new standard is desirable because it would help ensure that consumers could identify and purchase tires designed to provide a higher level of traction in harsh winter conditions.

The new sidewall symbol, a snowflake-on-the-mountain, will appear adjacent to the tire's M&S symbol to denote those tires which met the required performance in snow testing. While this symbol is expected to be fully implemented by the winter of 2001, many tire manufacturers will immediately begin to place the snowflake-on-the-mountain symbol on the sidewall of tires that will arrive in time for the winter of 1999-2000. NOTE: Tires that meet the new RMA standard, but were produced before it went into effect will still offer the required level of traction, but will not be able to be identified with the snowflake-on-the-mountain symbol.

However, the State of Oregon isn't about to wait. Until now motorists had to carry and/or use studded tires or tire chains in Oregon snow zones when required during winter weather. The Oregon Department of Transportation estimates that each year $11 million dollars is spent to repair damage caused by studded tires. In 1997, the Oregon Legislature approved that tires meeting the Rubber Manufacturer Association definition for "Tires Suitable for Use in Severe Snow Conditions" would be considered "traction tires" and allowed for their use in place of studded tires when traveling through Oregon snow zones.
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Old 08-09-2006, 03:44 PM #4
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Good read...

Don't know all the tires...but I do know the following have the snowflake-mountain symbol...

Goodyear Wrangler SilentArmor
General Grabber AT2
BFGoodrich AT T/A KO

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Old 08-09-2006, 04:02 PM #5
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Quote:
Originally posted by jwyshrek
Goodyear Wrangler SilentArmor
General Grabber AT2
BFGoodrich AT T/A KO

J
I think that the General Grabber is BFG/Michelin's branch...therefore, this tire is another (cheaper) version of the BFG AT KO.
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Old 08-09-2006, 05:40 PM #6
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Apparently General Tire is part of Continental. The Grabber looks like an interesting tire.

Good info on the snowflake.

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Old 08-09-2006, 06:52 PM #7
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BFG and Uniroyal are subsidiaries of Michelin.

General and Continental are a different entity that you definitely want to avoid. Pure garbage tires. My C$0.02.
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Old 08-09-2006, 11:17 PM #8
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Whoops...i stand corrected.
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Old 09-22-2006, 01:27 PM #9
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Found another tire with the mountain/snowflake symbol...not sure you can get it here in the states...

http://www.nokiantires.com/en/tire_w...?season=summer
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Old 09-22-2006, 01:44 PM #10
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Quote:
Originally posted by jwyshrek
Found another tire with the mountain/snowflake symbol...not sure you can get it here in the states...

http://www.nokiantires.com/en/tire_w...?season=summer
Nokian makes mostly winter tires, right?? I hear that they are pretty good for winter.
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Old 09-22-2006, 02:05 PM #11
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Well, from what I can tell...it appears to be a all-season type tire with good winter traction.

I guess it would be good for those who never go offroad...it has directional tread pattern, so it seems more for the street...
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Old 10-04-2006, 09:02 PM #12
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My Dunlops have a sillouette of a grocery bag and a soccer ball.
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Old 10-04-2006, 09:34 PM #13
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Quote:
Originally posted by Ed Rooney
My Dunlops have a sillouette of a grocery bag and a soccer ball.
Yup, you're screwed on the mountains!
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Old 10-20-2006, 03:53 PM #14
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Found another suv/truck tire with mountain-snowflake symbol...

http://www.tirerack.com/tires/tires....era+TripleTred
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Old 04-25-2007, 01:52 PM #15
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Quote:
Originally posted by Kmvreter
BFG and Uniroyal are subsidiaries of Michelin.

General and Continental are a different entity that you definitely want to avoid. Pure garbage tires. My C$0.02.
i had the grabber at2's on my land rover discovery and i never once even came close to getting stuck...while i had them i went through 12-15" of mud for 300+ft and 4ft loosely packed sand dunes without a problem. didn't even have to lock the center diff. their sidewalls aren't as robust as the bfg a/t's, but they're not a 7-ply tire either. i would hardly call them garbage though. and continental makes some of the best car tires around. they even make some really nice sportbike tires.
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