hey, couple quick questions. first are the rotors the same size for the front and back of my car? Also if i bought 2 stock front calipers, would it be easy to mount those 2 in the rear, replacing my small stock caliper in the back. would this bolt right up to the stock rotor, or would i need 2 new rotors off the front too?

 

Nope, the rotors are WAY larger in the front than in the rear. Usually the calipers contain more pistons too. Mounting is way different too, cause the calipers are way bigger was well.

Most cars run much bigger brakes on the front, thats where most brake power comes from. Particularily when you break hard, the back of the car looses alot of its 'weight' so the rear brakes loose effectivness. (Race cars are different.)

I assume that you want to do this for looks rather than improving braking effectiveness. Maybe a Porsch rotor/caliber combo might work. I have seen this in pics anyway, but to use stock front and mount em on the rear. No way it will work. The hub and axel are also heavier on the front of the car, so the rotor is not likely gonna fit on the hub. The caliber mounts will be different too.

 

yea, after close inspection (not really) but u can notice the size difference in rotors. what if i replaced the rear rotor too, i can get the parts cheap, im just trying to find out how i can get this to work. yes, its 100% for looks, i dont expect this to help my braking, aslong as my e-brake works still, im good to go. what parts do you think i would need to make this work, more in specific, mounting hardware. thanks for your help

 

Oh yeah, totally forgot about that, the e-brake won't work. And, I see no way to ever make it work again. THere are three ways ebrakes work when you have a rear disk (so that i have seen) :

1. The caliber is special, and the piston rotates as it moves out, thus the cable / brake is always properly adjusted. (my Eagle Talon had this, I believe lots of Asian cars use this setup)

2. There is a second manual mini disk brake near the output shafts of the rear differential. Friends older Jaguar had this, only one i ever saw)

3. The rear rotor contains a mini drum brake inside. THis is the current favored system by German cars. I assume this is the way the Audi works, its the most common of all 3 types.

That being side, there is no way u can make this work, because either the caliber or rear disk is unique, and the front components don't work this way at all.

If you are really set on this, I'd look toward a Porsch's setup. They are the closes to the Audi, you might be able to get something to bolt on, but I have no idea about compatibility. Truthfully, not likely a good idea to play around with the brakes that way unless you know exactally what you are doing. I think Audi still uses the diagonal braking setup, that means the front and diagonal rear wheel are on the same 'circuit'.

 

fawk, sounds pretty complex, thanks for the insight, least i know what im up agaisnt if i try to get this work. not something im tryin to do yet, got some other **** to do, but my buddy could get parts cheap, so wanted to see how i can get this to work. looks like its gonna be a little harder then i thought

thanks tho!

 

Maybe there is a good aftermarket brake kit that you can get that has is all. I have seen them online before. The rotors might be bigger.