{"id":37507,"date":"2021-01-28T06:00:56","date_gmt":"2021-01-27T21:00:56","guid":{"rendered":"https:\/\/www.panamera-life.com\/?p=37507"},"modified":"2021-06-01T23:39:01","modified_gmt":"2021-06-01T14:39:01","slug":"cayenne-winter-tire-2021","status":"publish","type":"post","link":"https:\/\/www.panamera-life.com\/en\/entry\/cayenne-winter-tire-2021\/","title":{"rendered":"Purchased Winter Tires: Differences from Studless Tires and a Talk About TPMS"},"content":{"rendered":"

Winter Tires and Studless Tires Are Completely Different<\/h3>\n

The other day, I switched the tires on our Cayenne to winter tires.<\/strong> Until then, I had thought that winter tires and studless tires were the same thing, just called differently by different people<\/strong>, but I learned for the first time that they are completely different tires.<\/p>\n

Studless tires are designed for Japan\u2019s winter road conditions, where snow melts during the day as temperatures rise, then refreezes at night, making the road surface icy and slippery<\/strong>.<\/p>\n

They have excellent control performance on ice, allowing safe driving, stopping, and cornering on icy roads. However, while they perform well on snow and ice, they are weak on dry and wet normal roads.<\/strong><\/p>\n

\"Winter<\/p>\n

On the other hand, winter tires are mainly used in regions like Europe where ice-covered roads are rare<\/strong>. They are not strong on ice but perform close to studless tires on snow, and on dry and wet roads, their performance is similar to summer tires. (This is mentioned on Michelin\u2019s website<\/a>)<\/span><\/p>\n

In Germany, it is mandatory to switch to winter tires when the temperature drops below 7\u00b0C. This is because summer tires are designed for rigidity and elasticity at high temperatures, so at low winter temperatures, the rubber hardens and grip is lost, making it dangerous to drive.<\/strong><\/p>\n

Indeed, on the German Autobahn, where people drive at 200 km\/h on cold winter days, it would be dangerous not to have winter tires.<\/p>\n

According to tests by major tire manufacturer Continental, below 7\u00b0C, braking from 60 km\/h requires 3 meters more stopping distance with summer tires<\/strong>. Also, Porsche\u2019s official website states that on wet roads at 3\u00b0C, winter tires stop 12% shorter than summer tires when braking from 80 km\/h<\/strong>.<\/p>\n

In Japan, there is no rule to change tires based on temperature, and this is not widely known, but I think all Porsche owners should definitely be aware of this.<\/p>\n

Why We Purchased Winter Tires<\/h3>\n

My husband chose to buy winter tires instead of studless tires, and when I asked him why, he said:<\/p>\n

Since it\u2019s our Cayenne, I wanted to try driving on snowy roads and go skiing.<\/strong> I also want to teach our daughters how to ski soon. While considering tires, personally, I\u2019m quite dissatisfied with domestic studless tires.<\/strong> Unless you live in places like Hokkaido or Tohoku where ice and mirror-like ice roads are common, our area doesn\u2019t freeze that much in winter. At most, we visit nearby ski resorts a few times a year. Also, hard ice-covered roads are very rare.<\/strong> Yet, the soft feel of domestic studless tires rated Q speed range, road noise, poor straight-line stability, and weak wet grip<\/strong> make it hard to tolerate wearing them all winter. It feels like it ruins the car\u2019s performance. (My brother uses Michelin\u2019s X-ICE on his car, which seems quite good though.)<\/span> So, I deliberately chose winter tires instead of studless tires.<\/strong> I fully understand that their ice performance is inferior to studless tires. These tires suit Kansai\u2019s environment better, where rain and sleet are far more common than snow, and they offer excellent dry grip at low temperatures and, above all, superb high-speed stability that doesn\u2019t spoil Porsche\u2019s performance. By the way, the 991.1 Carrera 4S we rented on our honeymoon trip to Germany was equipped with winter tires.<\/strong><\/a> Even driving over 200 km\/h on the Autobahn was no problem, and the snowy areas around Neuschwanstein Castle were fine too, right?<\/p>\n

Indeed, Germany in October, when we honeymooned, was quite cold. My \u201crain woman\u201d luck was in full effect, and we couldn\u2019t see Neuschwanstein Castle at all due to thick fog.<\/p>\n

\"Fog

Photo from that time. The fog was intense\u2026<\/p><\/div>\n

Snow was falling lightly, and Munich was gloomy with rain, but I never felt scared riding in the passenger seat.<\/p>\n

Or rather, I wasn\u2019t interested in cars back then, so I mostly slept through it\u2026 (What a waste!)<\/span><\/p>\n

\"Porsche<\/p>\n

By the way, our Cayenne has 20-inch Cayenne design wheels, but this time, he bought almost-new 19-inch Cayenne wheels for winter tires from Yahoo Auctions<\/strong>. The tires are Porsche-approved Michelin Pilot Alpin 5 SUV N0<\/strong>.<\/p>\n

\"Michelin<\/p>\n

\"\"<\/p>\n

\"Michelin<\/p>\n

According to my husband, it was quite difficult to find these Porsche-approved winter tires. Everywhere he inquired was out of stock, but after searching extensively, he finally found a shop that said, \u201cWe have one set left.\u201d<\/strong> and managed to get them.<\/p>\n

The price was about 150,000 yen for the used wheels and about 150,000 yen for the tires, totaling around 300,000 yen<\/strong>. He had them shipped directly to Nishinomiya Base<\/a> (who are meticulous with their work and have a godlike obsession with wheel balancing) for installation.<\/p>\n\n\n\n
Next page \u2192 How does the aftermarket TPMS perform on these tires?<\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/p>\n

About TPMS (Tire Pressure Sensors): Are Aftermarket Ones Okay?<\/h3>\n

Since our Cayenne\u2019s summer tires are on 20-inch wheels, I asked my husband, \u201cWhy did you choose 19-inch wheels for the winter tires?<\/strong>\u201d and he said:<\/p>\n

Because 19-inch wheels and tires are cheaper than 20-inch ones.<\/strong> I don\u2019t care about looks for winter tires, and when it comes time to replace worn tires, cheaper is better. Also, I don\u2019t dislike the design of these 19-inch wheels\u2014they actually look more SUV-like, which I like.<\/p>\n

He also bought tire pressure sensors on Yahoo Auctions. Porsche\u2019s genuine sensors for four tires are quite expensive, so he got compatible new sensors for about 20,000 yen.<\/p>\n

Since my knowledge is limited, I thought, \u201cWhen you switch wheels or tires, the tire pressure automatically shows up on the car\u2019s meter, right?<\/strong>\u201d<\/p>\n

So I asked, \u201cWhy do you have to buy tire pressure sensors separately? Aren\u2019t they already installed on the car?<\/strong>\u201d<\/p>\n

Modern Porsches have tire pressure sensors installed in the wheels, but the wheels I bought had the sensors removed by the previous owner. So if I left it as is, every time I start the engine, a tire pressure system warning would appear<\/strong>, which would be annoying. That\u2019s why I decided to buy and install separate sensors.<\/p>\n

I see\u2026<\/p>\n

\"TPMS\"<\/p>\n

If I had bought a Porsche myself, I would have had no idea about this and would have been surprised by the tire pressure warning as soon as I switched to winter tires. I\u2019d probably rush to the dealer, buy sensors, and have to remove and reinstall wheels and tires again, which would cost a lot\u2026 lol<\/p>\n

However, my husband said about the non-genuine sensors:<\/p>\n

I read online that \u201cyou need to clone the sensor ID\u201d or \u201csetup is required\u201d<\/strong>, so I was nervous about buying them. But the product description said, \u2018Programming is done, and the vehicle will automatically recognize the sensors after driving at speeds above 25 km\/h for a few minutes<\/strong>.\u2019 I trusted that, drove for about 20 minutes, and it recognized them without any problems. I was relieved. The pressure readings were also very accurate, matching the air gauge closely, so I think they\u2019re quite reliable. By the way, to register new TPMS sensors, you just need to change the setting on the car\u2019s screen from \u201820-inch Summer Tires\u2019 to \u201819-inch Winter Tires\u2019 and then have the car recognize the new TPMS. If you want to keep the old setting and sensors, you\u2019d have to clone the existing IDs, but I don\u2019t see the point. It\u2019s better to just register the new TPMS normally.<\/p>\n

\"TPMS<\/p>\n

Now that winter driving with the Cayenne is possible, my husband plans to go skiing with a friend in February to test the actual driving performance.<\/p>\n

So far, on regular roads, the tires feel very smooth and no different from summer tires, but I\u2019ll write a review after driving more.<\/p>\n","protected":false},"excerpt":{"rendered":"Winter Tires and Studless Tires Are Completely Different The other day, I switched the tires on our Cayenne to winter tires. Until then, I had thought that winter tires and studless tires were the same thing, just called differently by different people, but I learned for the first time that they are completely different tires. 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