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Old 22nd March 2014, 18:59   #1
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Default Nice article on Winter Tyres

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There is no spring in the tire business but a long winter that lasts from October to April. It's the temperatures that count and the average has to stay under 44 Fahrenheit. The mixture of sunflower oil, silicone and another 200 components known as the rubber compound only works in that range.P

At this point, the meteorologists step in to tell the rest of the crew how Copenhagen has 61 rainy days while Rome has only 51 with Bucharest being even drier at 44 during that testing period. Another bunch of experts from the University of Dresden also add that after researching the subject for 12 years through 12,000 cases, they concluded that one third of winter accidents happen in wet, with 16% being in a curve. It's had to follow already, but they also claim that snow makes the risk five times higher, while the most important thing remains to work in a completely clean road without any ice or snow as 92% of accidents happen in such ideal conditions.P
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Continental has the benefit of making everything from electronics to safety systems and drivetrain components, which means they can develop tires parallel with other technologies in house. That's pretty efficient.P

Michelin on the other hand is building a database at the moment. So far, 3,000 chosen drivers have a measuring device in their cars which uses GPS to record distance, speed, the intensity of braking and acceleration and the actual fuel consumption with the exact coordinates, linked to all the information about the local weather.P

By analyzing this endless stream of data, Michelin will get a picture of how their tires perform taking everything from driving styles to geographic differences into account.
http://jalopnik.com/the-insane-resea...-ke-1543241861


Quite a nice article on winter tyres. I know it's useless for most of us in the tropics but it's interesting to read about the kind of research a company (in this case, Michelin) does while developing a new product.
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Old 23rd March 2014, 20:34   #2
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Default re: Nice article on Winter Tyres

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Originally Posted by Nikhilb2008 View Post
http://jalopnik.com/the-insane-resea...-ke-1543241861
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It's the temperatures that count and the average has to stay under 44 Fahrenheit. The mixture of sunflower oil, silicone and another 200 components known as the rubber compound only works in that range.
Interesting.

So cold weather compounds are different from hot weather compounds. Given that Michelin are importing all their car tyres to India at present, are we using compounds meant for 44*F, at 44*C?
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Old 24th March 2014, 22:25   #3
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Default Re: Nice article on Winter Tyres

No no! Michelin tyres sold in India are made for Asian countries. XM2, P3ST, Latitude Cross are not patterns you will find in other parts of the world.
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Old 3rd February 2017, 16:18   #4
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Default Re: Nice article on Winter Tyres

Here's another good one:

AWD Doesn't Matter in the Winter. Tires Do.

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“But with AWD, you can get moving easily enough that you can overestimate your ability to stop and turn. Every vehicle uses the same four contact patches to stop and turn. AWD is not a benefit there.”
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Modern Winter Tires Were First Developed in Japan, in the Early ‘90s

“The air quality in Japan was falling off during winter months due to studded tires chipping away at bare pavement, creating airborne dust,”
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“Flexibility determines your tire’s traction,” he continues. “Somewhere in the 40- to 45-degree F range is where we begin to see all-season tires lose traction. The rubber becomes very stiff; it can’t conform to the texture of the pavement, and stops providing traction.”

Winter tires are made from a different rubber compound than all-season tires. Where an all-season works optimally from about 45 degrees F, up to 100 F or so, a winter tire is made from a compound designed to work best below that 45-degree F point.
https://www.outsideonline.com/214416...inter-tires-do
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