Talk about how air pressure, wheels, and tires make a big difference in the ride quality of a car.
Published on May 28, 2020
Ride comfort of the Panamera
The other day, I drove our Panamera for the first time in a while. Shortly before that, I had been allowed to test drive a Panamera GTS, so compared to thatPanamera GTS rides better than Panamera Turbo.I had a feeling.
The ride of the Panamera GTS was similar to the smoothness of the current Cayenne, or...It's hard to believe it's the same V8, it's soooo light and smooth.The Panamera Turbo seemed to have a heavier, lumbering feel to it.
We were just talking about this when my husband
It is difficult to compare the ride quality of a car just by comparing different models, isn't it?The size of the wheel and the
It can change as much as you want depending on the air pressure, the tires you are wearing, and other factors like that.I'm not sure.
I said. I see... Continue.
I got to test drive it the other day.The Panamera GTS had 20" wheels and the air pressure was around 2.6-2.8.Right? My Panamera has large 21-inch wheels, and the specified air pressure (standard pressure) is 3.1 in the front, so I think it gives the car a rough and hard ride.
And.
I said, "If you do that.Maybe our Panamera should try lowering the air pressure more?Then the ride would be softer and smoother, right?" My husband replied, "Yes.
Well, yes, but... my Panamera is equipped with TPMS (Tire Pressure Monitoring System), so it warns me if I lower the pressure appropriately. By the wayThe air pressure is set to "standard pressure."I'm not sure how to do it. If you set this to "comfort pressure" and change the air pressure, you can get a smoother ride.Comfort pressure on Japanese models is set to warn if the car goes over 160 km/h.
Well, I don't think I will ever drive more than 160km/h on Japanese roads, but I don't like such Japanese-specific specifications, so I use standard pressure. So, as a result, I end up with a stiff ride.
Incidentally, the German version of Comfort Pressure is set to 270 km/h. That's just like the country of the autobahn.
And. As I recall, my husband once told me about this area....
The air pressure in the 971 Panamera that we are currently driving at home isTwo types of pressure can be selected: "standard pressure" and "comfort pressure."So. When the car is purchased, it is left pre-set to one or the other by the dealer, which means that it can be changed to suit your preference.
Incidentally, in the case of the 971 PanameraSettings can be changed on the touch panel under "Vehicle→Controlled Vehicle→Tire Pressure Monitoring".
andPorsche with TPMS is aI have to look at the vehicle screen and see the instructions to add/decrease how much more air to add/decrease and then add air.In. If you use an air meter to inflate, the air pressure will be totally different because it doesn't take temperature into account.Surprisingly few people know about this. Many people don't know about it, even those who like Porsche a lot.
My husband said, "I don't know how you know all those details. I said, "I mean, how do you know all those details?"
Naturally, I am not comfortable with knowing 100% about the tools I use (laugh). I research everything to death before I buy anything.
My husband laughed.
Depth of Ride
My family's Panamera is.Although it is firm, it is not uncomfortable to ride, but rather smooth.I think. I think the Boxster is also more supple and smooth, but when I switch to the Panamera shortly after, I think, "Even in the same Porsche, the ride quality is so different between the sports and luxury models.It makes me think, "What is this?
Wheels are 21" and the air pressure is such a good ride even with standard pressure.So, if the wheels were a little smaller and had comfort pressure, our Panamera would have an even smoother ride.
It also depends on the brand of tires you are wearing...it is very deep.
Thanks to you, I have the opportunity to test drive a variety of cars.It's hard to say "this car rides..." just by test driving it once.I wondered if it was a good idea.
Ideally, we would like to be able to make a comprehensive judgment of the same model by changing the air pressure and riding on different sized wheels, but it is not possible to do so on a test ride.
Given that, it's a good idea to write an article aboutCommunicate the prerequisites of what kind of specifications, options, and wheels the car we test-drove this time is equipped with.I was reminded that it is really important to
Well...the more you know, the deeper the car is.
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I'm a returning rider and motorcyclist.
We know that tire pressure severely affects ride quality and grip.
If the bike's front tire slips, it will surely fall over and injure itself.
So I have to be very serious about grip.
Tires warm up differently depending on air and road surface temperatures, and some tires have a large temperature dependence.
We are aware of the air pressure according to the character of that tire, vehicle weight, weight, driving style, season, air temperature, and road surface temperature.
It is an old book but it is my bible.
If your husband is interested, please encourage him to do so.
Why Do Cars Turn? -Dynamics of Marginal Cornering" published in 2001
Automotive Tire Research, published in 1995.
I don't know if you can get it or not (irresponsible, I know), but the physical laws are the same.
It will also be permanent. See you then.
Kazukane Hills
I see...!
Tires are amazing. Especially when it comes to motorcycles, they are even more life-threatening than cars.
You have to be even more severe when it comes to tires, and you have to drive with understanding...
It's amazing...
And thank you for the book!
I found it for sale on Amazon, I'll let my husband know!
If you want to understand cars, you still have to delve into these areas...
(This is my weak point ^^;)
I will continue to learn more about it.
Thank you for your continued support.
I have experienced that different brands of tires change the ride quality.
All components (shocks, springs, body reinforcement, etc.) are the same, from the tire size.
The only difference is the brand of tires.
A grade that takes advantage of the supple Michelin characteristics and a grade that emphasizes response with high grip tires (Bridgestone Potenza) that have high rigidity and good bite.
I felt that tires alone can change the character of a car to such an extent, and I also learned anew about the amazing development capabilities of the manufacturers who plan them as products (Nissan Serena Autec and Serena Nismo).
nashi6944.
Thank you!
It is so valuable to be able to compare the differences in tire brands only...amazing.
>I felt that tires alone can change the character of a car to such an extent, and I also learned anew about the amazing development capabilities of the manufacturers who plan them as products (Nissan Serena Autec and Serena Nismo).
Truly, tire manufacturers have amazing development capabilities...
The development of the company has been a great success, and we are very proud of all of our engineers and drivers who have been involved in the development of the company.
I thought again that it must be a mind-boggling series of tests and tasks.
I would like to run my 320i with new tires.
Hello.
When I started driving a Porsche, I could always see the air pressure and was surprised to see how much it changed with temperature changes.
> And for Porsches with TPMS, you have to look at the vehicle's screen and look at the instructions for how much more/less air to add.
> If you use the meter on the inflator, it doesn't take temperature into account, so you'll get a totally different air pressure.
As for the "for daily driving," I think it is possible to calculate and insert the value appropriately, unless it is adjusted frequently.
I use the air tank provided at the gas station, so I read the value at the start of the run, see how much the value has increased when I arrive at the gas station, set the value to the amount I added and fill the tank, and the next time I start the run, the value is almost exactly what I was aiming for. In winter, the air pressure should be plus 0.1 to 0.2 kg upon arrival at the gas station after running for a while, and in summer it should be 0.3 to 0.4. If the designated air pressure is 2.5, you can add this value and set the air pressure to 2.6 or 2.9. If the weather forecast indicates that the temperature is likely to rise in the near future, the air pressure is set slightly lower, and if it is likely to fall, slightly higher.
In the case of 718 Cayman, the front and rear were increased by almost the same amount, but in the case of 991.2 Carrera, the front may be increased or the rear may be increased depending on the temperature and road surface temperature, so it is necessary to remember the values for front and rear separately. In the case of 991.2, in addition to Comfort, there are two other specifications: Fully Loaded and Partially Loaded. The manual does not have a detailed explanation, so I checked with Porsche Center and they said that partial load is OK for a two-seater.
The most obvious difference between tires is winter tires. The tread rubber is obviously softer, so the bumps are softer. It is strange that the air pressure specifications are so different even for the same size tires. In particular, the difference between the front and rear tires is about 0.4 for summer tires, but only 0.1 for winter tires. I wonder if riding in colder weather warms up only the rear wheels and raises the air pressure. I guess so...
PorscheDreamer.
The air pressure relationship is different again between the 718 Cayman and the 911.
My parents' car was a regular passenger car.
It never occurred to me that I'd have to ride around worrying about oil temperature, water temperature, air pressure... all sorts of things.
After getting to know Porsche, I realize that it is a very deep world.
Winter tires, yes.
Our family has (supposedly) never had winter tires on our Porsche yet.
I will ask my husband again.
Thank you for everything!