Buying Winter Tires. The difference between studless tires and TPMS.

Winter tires and studless tires are completely different

The other day.Cayenne tires were replaced with winter tires.Until this time, I had not been able to find a "Winter tires and studless tires are the same thing, just called differently by different people.I thought it was a "one size fits all" tire, but this was the first time I learned that it was a completely different type of tire.

Studless tires are available in the "The temperature rises during the day and the snow melts, and at night the temperature drops again and the melted snow freezes, making the road surface smooth.The tire is suitable for winter road conditions in Japan.

It has very good control performance on ice so that it can run, stop, and turn on ice without any problems. HoweverStrong against snow and ice, but weak against dry and wet normal road surfaces.

Winter tires, on the other hand, are mainly used in Europe, such asWinter tires worn in areas that are not often iced overIt is. While not strong on ice, it performs similarly to a studless tire in snow, and similarly to a summer tire in dry and wet conditions.(in Japanese history)It was mentioned on the Michelin website.)

In Germany, they are required to change to winter tires when the temperature drops below 7 degrees Celsius. Summer tires are more rigid and resilient at higher temperatures.Rubber becomes hard and grippy when running at low temperatures in winterThe reason for this is that it is dangerous because of the

Certainly, in Germany, where people drive at 200km/h on the autobahn on a cold winter day, it would be dangerous if they did not have winter tires on.

In fact, according to tests by leading tire manufacturer ContinentalBraking from 60 km/h at temperatures below 7 degrees Celsius, the braking distance is 3 m longer with summer tires.The data also shows that Also, according to Porsche's official websiteWinter tires stop 12% shorter than winter tires on a wet surface at 3 degrees Celsius when braking from 80Km/h.It seems.

In Japan, there is no rule about changing tires according to temperature, and this is something that is generally little known, but I thought that owners of high-performance cars like Porsche should be aware of it.

Why Buy Winter Tires?

My husband bought winter tires instead of studded tires, and I asked him why.

I want to go skiing on snowy roads with my Cayenne.I'm going to teach my daughters to ski soon. I want to teach my daughters to ski soon.
That's what I was thinking when I was looking into tires.To begin with, I personally am very dissatisfied with domestic studless tires.No, it's not.
I don't know about Hokkaido or Tohoku, where icy slopes and mirror burns are a common occurrence, but the area around my house doesn't freeze that much even in winter. At most, we go to a nearby ski resort a few times a year or so. MoreoverThere is seldom such a hard icy slope.
And yet, the feeling of those squishy tires on domestic Speed Range Q-rated studless tires and theRoad noise, poor straight line stability, poor wet gripI can't stand wearing them all winter long. I think it would ruin the performance of the car.(My brother has Michelin X-ICE on his car, which seems pretty good)
So.We dared to choose winter tires instead of studless tires.We all know that ice-burn performance is lower than that of studless tires.
It is also good for the environment in Kansai, where rain and sleet are far more common than snow, and it has excellent dry grip performance at low temperatures and, above all, high-speed stability, because it does not spoil the performance of the Porsche at all.
By the way.The 991.1 Carrera 4S we rented on our honeymoon in Germany had winter tires.I'm not a fan of that.
I could drive on the autobahn at over 200km/h and still be fine, even around Neuschwanstein Castle where there was a sprinkling of snow, right?

He said.

Indeed, it was quite cold when we went to Germany on our honeymoon in October, and I was unable to see Neuschwanstein Castle because of the thick fog.

Photos from that time. The fog was so thick...

It was snowing, and it was cloudy and raining in Munich, but I didn't feel scared riding in the passenger seat.

I mean, I wasn't interested in cars at the time, so I was mostly sleeping on the bomb...(What a waste)

Incidentally, our Cayenne has 20" Cayenne design wheels.Purchased almost new 19" Cayenne wheels for winter tires from Yahoo!The tires are Porsche-approved. And the tires are Porsche-approved "Michelin Pilot Alpen 5 SUV N0".

According to my husband, it was quite difficult to find these Porsche-approved winter tires, and no matter where he inquired, they were out of stock, and after searching and searching, he finally found "theI have one set.He found a store called "The Bamboo Shop" and got it.

Price.Used wheels are about 150,000 yen and tires are about 150,000 yen, totaling about 300,000 yen.So they say. And the usualNishinomiya Base(The work is meticulous. The attention to wheel balance is god). (who is very careful about the work, and his attention to wheel balance is divine).

Next page→The air pressure sensor for this tire is an external one, how is its performance?

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