Audi Rs4 B5 Calipers Discs And Pads For Sale

[Ars4b5]

Hi guys i have just purchased a set of front and back b7 rs4 brakes so i will be selling my orignal B5 brakes once the new ones are fitted,

The discs are in excellant condition with no scoring and calipers all work as they should.

pads may need replacing but im not sure until i take them out,

I am looking for 600 pounds, i would perfer pickup but can arrange delivery at cost.

so up for sale is front and back calipers and discs and pads

im not always on here so if anyone is intrested please PM me or call me on 07936786786

[stumpyrs4]

Did you get the set advertised on fleabay recently for £1000 ?!

Absolutely steal that was... Beat me to it.

[martin888]

Do the B7 brakes work better than the B5 ones? And if so by how much?

[Ars4b5]

If you are running more power than stock, than you need the b7 brakes there allot better and when your driving and you press the brake the car actually stops

[martin888]

How do you quantify better? Less fade from repeated stops or less pedal pressure for the same stopping distance? Did you try softer pads on the stock rotors? The weakest link in the braking system is usually the tyres grip. If you can hit the brake pedal hard and the ABS cuts in, then it's the tyres that need changing not the brake rotors.

Are the B7 brakes bigger? Do they have less mass? Did you get the ceramic discs? Do you need the 19" rims to fit the B7 brakes. Do you know if the all up weight of the 19" rims and brake is less than original?

I don't suppose you know the mass and radius of gyration of the before and after of the wheel, tyre, and brake combination?

Sorry for the interrogation, I'm a mechanical engineer and details are important to me.

The amount of power an engine puts out is not why you need better brakes it is the speed you are braking from the requires the brakes, energy stored in a car is proportional to the square of the speed. Double your speed and you need to take out four times the energy to stop or four times the distance. The engine power output has nothing to do with the stopping of the car.

A larger rim diameter and larger brakes can slow a car's acceleration considerably because there is more mass further away from the axle (the combination can even have less mass and be worse because it is mass times distance) presenting a higher rotating resistance to the engine. This effect is most apparent in first gear and decreasing as the gears increase. This is because the acceleration decreases in each gear. The energy not going to accelerate the car is stored in the wheel rotation and must be given up through rolling longer or in the brakes.

[jogi730]

Are you willing to split the front and rears?
I am after a set of rears for my Typ85.
Do the bells you have fit?
Many thanks
Chris