patrick_y[PuristSPro Moderator]
28348
Stubbornly Overrated... But very good once you know how to drive it...
Dec 25, 2022,21:50 PM
Let me start off with the following. I really like Porsches, but I feel the vast majority of people who buy them have NO IDEA what they're buying. Let me explain... Porsches and BMWs are two luxury/premium German car marques. Porsche is considered luxury. BMW is considered Premium. Porsche produces around 300,000 cars a year currently, BMW around 2 million. Both of these car companies are known to use "simple but effective" designs and cost cutting designs. For instance... BMWs up until recently never had double wishbone suspension designs. Double wishbones are larger and due to their size, they generally have to be made in aluminum or else they'd be too heavy and have too much inertia. Honda used to market themselves as a car company with double wishbone suspensions in entry-level vehicles - unusual for cars of the entry-level class - but their double wishbones were made of steel. Double wishbones allow better camber adjustment and in every road situation (on camber corners and off camber corners) allow more of the tire's contact patch to stay in contact with the road therefore increasing grip. Porsche's 911 also never had double wishbone designs - at least not until recently - and that recent model is only limited to the 992 GT3 and GT3RS; Porsche's 911 models have historically favored a MacPherson Strut suspension which is much more conventional, cheaper, easier to assemble on an assembly line, easier to package, takes up far less room, and allows for bigger trunks and engine bays. Compare these two brands with their direct competitors Porsche to Aston-Martin/Lamborghini/Ferrari (which is admittedly another level more expensive) and BMW to Mercedes (very similar pricing and very direct competitors); the competitors used far more expensive ingredients.
Now... Onto the driving. The vast majority of Porsche 911 drivers are buying the name and reputation of the car brand and they think they're wonderful drivers. Kind of like my friend who owns 10+ Patek Philippes and thinks he's an expert on Patek Philippe but doesn't know what the difference is between a hairspring and a mainspring. But in reality if the Porsche drivers don't have extensive experience in driving mid-engine cars (which are almost always exotic and very expensive), they have the common belief that the 911 is a superior automobile. The 911 is an amazing automobile - but when driven aggressively, they were absolutely terrible to drive and dangerous until the 2012 model year which brought with it the 991 generation. For most people, they had started driving Front-engined and Front-wheel-drive cars or Front-engined and Rear-wheel-drive cars or sometimes Front-engined All-wheel-drive cars as these are the most popular car types. Almost all people start with these cars and get accustomed to the dynamics of these cars. For whatever reason they eventually buy into a 911, usually when they're a little older after many years of driving Front-engined cars. Front engined cars behave very differently than Rear-engined cars. Front engined cars behave somewhat closer to mid-rear-engined cars (like a Lamborghini) than a rear-engined car (like a Porsche). Rear engined cars are kind of in a class all their own, and the engine is a very heavy component of the car and it's sitting behind the rear axle on a Porsche 911. A front engine car the engine is at least mostly on the front axle and not ahead (unless you're an Audi, Audi has a portion of the engine ahead of the axle). This weight being in the rearmost of the car makes the car act as a pendulum sometime.
For instance, in a corner on a race track, all people regardless of car type are taught to decelerate, turn in, clip the apex, and then start accelerating immediately after you clear the Apex and start straightening the steering wheel. And this will work in all cars, you will clear the corner safely in Front, Mid, or Rear engined cars with this technique. And for just about any front-engined and mid-engined car, you would achieve the best lap time using this basic formula. BUT! To achieve the best lap time for a Rear-engined cars have a very counter-intuitive formula: decelerate, turn-into the corner, just before you clip the apex of the turn you actually start accelerating, you pass the apex and continue accelerating as you straighten your steering wheel. To accelerate so early while you're still increasing your turning is extremely counterintuitive.
Why is that counterintuitive? Well, I think we can agree: the harder you accelerate, the less you should be steering. Thus, the maximum acceleration and maximum braking should be done when the car is not steering. You don't expect to make a sharp turn at 200 kph, because the car will simply skid and not turn and you'd have no control in the skid. Here's a chart that shows how much you can turn relative to your acceleration:
Photo Credit: F1 Clan
Basically you see a circle. And the circle says, the more you turn, the lower your acceleration or braking (or speed) has to be. Cars with more grip will have a bigger circle. Cars with less grip will have a smaller circle. In front-engined and mid-engined cars, this circle stays more or less consistent. But in a rear-engined car, this circle changes shape dynamically. Which is odd, because in certain situations, while you're turning, you can actually turn harder and yet accelerate harder - which is counterintuitive as it would mean that this shape is no longer a circle. Most 911 owners don't drive their cars aggressively. And if they do, they do it in a straight line. And even if they go on twists and turns, they believe they're going much faster than they ever would've gone... But it's also not objective. Someone coming out of a 10+ year old Toyota Prius is going to be vastly impressed with any new car - since the Prius is a very modest vehicle and car technology (especially suspension technology and traction control technology) has improved quite a bit in more mechanical and less marketable ways.
But, prior to 2012, any Porsche with the 997 generation or prior to that, the Porsche car was very difficult to drive. The dynamic limits of grip changed so drastically that a driver had to be very sensitive of what was going on in order to get the most out of the car. Porsche also wanted to dynamically balance their imbalanced car - the 911s are much heavier in the rear; so heavy that they put much wider rear tires. Now this isn't unusual, BMW and Mercedes do this as well - but they do it for RWD traction, Porsche does it for weight balance. Porsche also adjusted the camber of their suspensions to the most aggressive in the industry. Sometimes several degrees of camber! This meant that the inside tire would wear out much faster than the outside and it also meant when you were driving straight, only the inner 80% of the tire was touching the road, the outside 20% was barely touching the road. This worked well on roads with on-camber corners, as the whole tire surface is touching the road in the turn. but off camber corners were downright dangerous if you were driving aggressively you had only a small portion of the outer tire touching the road which meant in this case your grip was much smaller than the driver's assumption. And when you did lose traction on a Porsche in a mid turn, often the car would react violently. Spinning! Tail first spinning. The car's tail would wag the dog. Fortunately, for the 991 generation of the 911 which started in 2012, Porsche made dramatic changes to the car... The car was now super easy to drive. The computer traction control took care of everything. I did crazy things on the racetrack trying to provoke the car and every time the traction control corrected my mistake and prevented a spin. Gee, I wished I had that in the 996 and 997, would've saved me a lot of embarrassment!
And Autobahn driving (which I admittedly have relatively little experience in) felt a little less stable at high speed in a Porsche 911 to me compared to a BMW 5 series station wagon in my limited experience. The front of the 911 gets floaty after a certain speed. I suppose this makes sense since there's not enough weight nor downforce in the front?
If you're driving a 911 that's more recent (2012 or later) you don't need to worry about all those things I mentioned. Those really only apply to the 997-generations and later. Today, the 911 is so easy to drive, and the car is SO CAPABLE, and the car's computer is so smart that it can overcome most of the strange behavior of rear-engined cars. In fact, newbie drivers can actually come within a few seconds of the lap times of experienced professionals on short-length laps. Credit goes to the electronic stability control and credit goes to the suspension articulation.
So, there are two types of Porsche owners, the 90% who never take the car to the limits and are very happy with their machine which has great steering, reasonable comfort, and a fairly emotional driving experience. And there are the 10% who do drive aggressively; out of this 10% some will crash their cars - mostly not knowing what they did wrong - because they don't understand the strengths and weaknesses of the rear-engine set-up.
I tell all my friends considering Porsche 911 ownership to understand the physics - even if they're not aggressive drivers - because I want them to have a great ownership experience. And then I admit that the new 991 is so good that the car's computer gets you out of just about any sticky situation one can throw at it that everything I say almost doesn't apply if they're getting a recent model. Most of them shush me - they're never going to drive the car in an aggressive manner - they're just buying it for the looks, the image, etc. Some of them realize that there may be something they don't understand and they read up on it. A few of them have gone to Porsche-911-specific driver education. And some have given up 911 ownership and gotten a Cayman or Boxster or an entirely different car instead. Considering you're looking at a wide range of years, I thought I'd mention my hesitation with 911s older than 2012.
Bottom line, Porsches are great cars. Porsches and Lamborghinis are the only "reliable" sports cars (I define sports cars in a manner that excludes two door grand tourers and that they have to have a dry sump lubrication, a Ferrari Roma is not a sports car) according to the professional employees at a Las Vegas Drive an Exotic Car on a Race Track experience center. And I'd like a Porsche 911 GT3 if I could get my hands on one. With the juvenile rear wing or without, that is an amazing car and I bet I'd like it very very much. And it'd be so much more comfortable and easier to drive than the 996/997s I've driven in the past.