Buy winter tires. Differences from studless tires and stories about TPMS.
Release date: 2021.01.28
Winter tires and studless tires are completely different
The other day,I changed the Cayenne tires to winter tires.Until this time, I saidWinter tires and studless tires are the same, only different names are used by people.I thought, but for the first time I learned that it was a completely different tire.
Studless tires are "The temperature rises in the daytime and the snow melts, and at night the temperature drops again and the melted snow freezes and the road surface becomes slippery.This tire is suitable for winter road conditions in Japan.
Even in ice burn, the control performance on ice is very high so that you can run, stop and turn without problems. HoweverStrong against snow and ice, but usually weak against dry and wet roads.
One winter tire is mainly like Europe,Winter tires worn in areas that are rarely ice-burnedIt is. Although it is not strong against ice, it exhibits performance close to studless tires in snow and summer tires in dry and wet tires.(There was a description on the Michelin site)
In Germany, it is obligatory to change to winter tires when the temperature drops below 7 degrees Celsius. Because summer tires have rigidity and elasticity at high temperatures,If you run at low temperatures in winter, the rubber will become hard and the grip will not work.Because it is dangerous.
Certainly, in Germany, which runs on the Autobahn at 200km / h on cold winter days, it would be dangerous if you don't wear winter tires.
In fact, according to a test by a major tire manufacturer Continental,Braking distance from 60km / h at 7 ℃ or less, summer tires have a longer braking distance of 3m.There is also data that. Also, according to Porsche's official website,When braking from 80km / h, winter tires stop 12% shorter on wet roads at 3 degrees Celsius.It seems.
In Japan, there is no rule to change tires depending on the temperature, and it is hardly known in general, but I would like all owners of high-performance cars like Porsche to know it.
Why buy winter tires
This time my husband bought winter tires instead of studless tires, but when I asked him why
I want to go skiing on a snowy road from CayenneI don't know. I want to teach my daughters skiing soon.
I was thinking about tires, butIn the first place, I'm very dissatisfied with domestic studless tires.No.
I don't know about areas such as Hokkaido and Tohoku where ice burns and mirror burns are common, and the area around my house doesn't freeze so much even in winter. At most, it's a nearby ski resort that I go to several times a year. Moreover,There is rarely such a hard ice burn.
However, the feeling of that Gnyagnya tire, which is a domestic speed range Q standard studless tire,Road noise, poor straight-line stability, poor wet gripI can't stand wearing it during the winter. I think it will ruin the performance of the car.(My brother attaches Michelin's X-ICE to his car, which seems to be pretty good.)
Therefore,I chose winter tires instead of studless tires.I know that the ice burn performance will be lower than that of studless tires.
In this case, it suits the environment of Kansai where rain and miso are overwhelmingly more than snow, dry grip performance at low temperature, and above all, high speed stability is excellent, and Porsche's performance is not spoiled at all.
By the way,The 991.1 Carrera 4S I borrowed when I went to Germany on our honeymoon wore winter tiresHmm.
Even if I ran the Autobahn at 200km / h or more, it was okay at all, and the area around Neuschwanstein Castle where the snow was fluttering was okay, right?
I was talking.
Certainly, Germany on my honeymoon in October was quite cold, my rainy woman was unfortunately demonstrated, and Neuschwanstein Castle could not be seen at all in the thick fog.
The weather was flickering with snow, cloudy and rainy in Munich, but I didn't think it was scary to be in the passenger seat.
I mean, I wasn't interested in cars at that time, so I almost fell asleep ...(No way)
By the way, my Cayenne is a 20-inch Cayenne design wheel, but this timePurchased a nearly new 19-inch Cayenne wheel sold at Yahoo Auctions for winter tiresSeems to have done it. And the tires are Porsche approved "Michelin Pilot Alpine 5 SUV N0That's it.
According to her husband, it seems that it was quite difficult to find this Porsche approved winter tire, and it was out of stock no matter where I contacted, so I finally searched for it.There is one setI found a shop called "" and got it.
The price isUsed wheels cost about 150,000 yen, tires cost about 150,000 yen, and the total is about 300,000 yen.It seems. And the usualNishinomiya baseIt seems that Mr. (work is polite. Kodawari to the wheel balance is a god) sent the tires and wheels directly and installed them.
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