Forget the physics! Audi RS4
Manufacturers website: http://www.audi.com/
Brand new Audi RS4
The name Audi needs no introduction. For most of us Audi sounds like a synonym of popular, reliable high quality cars. Anyway there are some rare versions of Audi cars like RS4 – the A4‘s strong twin-brother.
Basically RS4 is the most powerful version of A4. Some experts even claim that this version even can‘t be compared to it‘s predecessor (or even it‘s competitors) because of the endless list of technical innovations. This car should satisfy any capricious driver with it‘s elegance, solid looks and perfectly controlled power. And this is possible only with worldwide known Quattro system. It‘s not a secret that Quattro and Audi is a “duo” that is desired by anyone who likes precise control at any speed or traction. And this system is transferring tons of power to RS4‘s wheels.
Quattro vs. physics…
No wonder that the RS4 driver feels like this car is on the rails – the Quattro system assures optimal power transfer to the wheels and this is the most efficient way to keep the every last drop of available grip.
The Quattro system is used by Audi over the last 25 years. The traditional system is used in many Audi cars, but the new RS4 has the special one. The main difference this system has is asymmetric-dynamic torque distribution between all four wheels and a locking Torsen trans-axle differential. With these features any driver could discover some new handling capabilities whatever he (or she) has driven before.
Of course, even this system has limits. This means that a rookie driver driving this monster on the limit (let‘s say on the icy road) should not forget that there are laws of physics. And even this astonishing car must go under these rules.
There are more things that make you smile. A car with Quattro is least prone to get stuck in snow or dirt like two-wheel driven cars do. Oh and you don‘t need these to feel what Quattro is – just try it on the gravel – the road type which Quattro was made for 25 years ago! Nothing could give you anything comparable to that confidence.
The RS4 (or any other S or RS model) could not exist without Quattro system. It‘s just too much power to propel a front wheel driven car. And Audi was never strong in rear wheel drive arena. Quattro is a clear and balanced decision. And probably it‘s the best one.
Audi RS4 engine
This Audi has 420HP (323kW) at 7800 rpm’s. It produces 430Nm of torque at 5500 rpm’s. 90% of the torques is available anywhere in 2250 – 7600 rpm range. This means that if you “step on the metal” at almost any revs you will feel that very same force pulling car away and pushing you back into the seat. The RS4 reaches 100 km/h in 4.8 seconds, but more interesting is that you can get 200 on a Speedo in 16.
S and RS series usually have turbo chargers, but this RS4 hasn‘t. It‘s a bit shocking for a real Audi-fan but the answer to the question “why?” is a direct fuel injection FSI system. This system has been around for a few years in some Audi models but it‘s something new for RS version. The benefits of FSI direct injection system are quicker throttle response, fuel economy and precise fuel injection at high rpm’s.
Redline is at 8250 rpm’s. This should satisfy any high-rpm fan. The sound this engine produces at that speed is something incredible. But there is no way any word in any language could describe it.
Audi RS4 brakes
It became a tradition that powerful Audis have serious brakes. Something has to stop monster like this assuring that the driver or passenger or anyone outside the car is safe. The first Audi to receive Porsche brake-system was RS2. It even had a blue line on it‘s badge with “Porsche” written on it. Even RS2‘s rivals like BMW M3 or Mercedes-Benz C32AMG had smaller brakes. The RS4 has (are you sitting?) 14,6 inch (365mm) diameter brakes at the front and 324mm rear ones. Amazing… isn’t? There aren‘t too many of us who has a car with wheels that big. The brake rotors are air-cooled cross-drilled so with size like this there is virtually no possibility to overheat them. Or brake fluid. Even at the most extreme braking action you can imagine. Similar brakes are used in well known DTM competition series by the very same Audi team.
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