Stupid question, but it's normal for my disc brakes to be hot to the touch right after driving... right? Front and rear.

 

The only stupid questions are those that are not asked...

Brakes convert energy (kinetic to be specific) to heat. So to answer your question, yes your rotors will be hot after driving (which assumes you were braking). If you watch car racing, you can see the rotors glow red from converting all of that forward momentum to heat as they brake from very fast speeds. Once the rotors become so hot that they cannot handle more heat, your braking distances increase. You should be able to find lots of info on places like "How Stuff Works." They do a pretty decent job with explanations...

 

 

Disc brakes got VERY hot!

Even the ones on mountain bikes get so hot you can burn yourself.

I've seen a guy do a 80-0 mph stop in a Corvette and light a cigarette on the rotor. It's somewhere out in Youtube...

 

like everyone said, brakes get very hot, but here is one that has me stumped.

i get more brake dust on the rear wheels of my Porsche than i do on the fronts...

 

The way the car is laid out, the rear does more braking. 95% of normal cars make use of the front brakes. But that 5% of those exotic car, the weight distribution is more towards the rear. IIRC its because the engine is in the rear of the car.

 

motor is in the front, transmission is in the back. braking is mostly done by the front brakes as that is where weight is shifted when the brakes are applied. i dont think its possible to do most of your braking with the back brakes no manner what the weight distribution is.

that would be like you pulling your "edge stunt" in a pickup with a full load, the back tires will just slide because weight is transfered when the vehicle slows.