UrS4 Rear Brake Upgrade

[Wrath]

Thuppu, no problem have more important things to fix myself but in the summer or fall that sounds like a deal...

I really don´t know, anything that fits don´t know the different in using 312x22x45 or 310x22x42,2 if the cheaper fits with any adapter then the cheaper it is
Then maybe I can use 360x34mm from an A8 and my Cayenne calipers in the front... will be awsome...

[popdemonic]

yup,I'm the one who looking to upgrade the rear brake. only one issue is the e-brake.there's a few solutions for these.I know the local guys who is my friend done the e-brake on UrS4.he uses another separated master cylinder for e-brake.that car is running with Rear 986 Boxtser calipers.I'm going to do the rear brake upgraded on my car too.Currently,I have 353X34mm on the front with huge Cayenne calipers.I'm looking RS6 rear rotors if they're affordable or another solution is I have
brand new Rotor 348X30mm laying for year,I might be needing it to be resized down a bit and using the Rear cayenne calipers.Get them for customed center hubs(I need to measure the overall heights.If they are similar/closed to the stock,i'm sure i can make them working out),customed brackets,
About the e-brake,Just using e-brake from Brembo.I have all of parts(Calipers,discs,e-brake calipers) but Times.

[Thuppu]

Ok, that's quite heavy modification. Maybe you need some adjustable valve for the rear brakes so they are not too efective..? We was just talking about to put a bigger rear disc and use the stock caliper with a adapter. Also the stock handbrake works with this solution.

[rst]

This upgrade based on S4 b5 and A8, this should also work on UrS4 and UrS6. S4 b5 has the same size disc 269x20. May car rear disc are quite worn so in the next couple of months i'll try to upgrade the rear brakes. I really dont need more braking power in the rear but 269mm disc look so small behind 18" wheels. This upgrade is more like a cosmetic one.
http://forums.audiworld.com/showthread.php?t=1538020

http://www.audiworld.com/tech/wheel1.shtml

[Wrath]

Have thought many times about hydralic handbrake or another caliper for the handbrake for using heavy calipers for rear setup, but easiest route for me will be to use stock calipers and handbrake, just using a adapter with bigger discs....
As im after same as rst, a more cosmetic look...

[popdemonic]

Thuppu,
actually,i really want the rear brake to do its job more.our car has known to be not a well balanced on brake.i feel the car dives nose
everytime with hard braking even i had stock brake calipers tho.

[popdemonic]

I'm considering this..

[popdemonic]

mistaken click the post button,The point is the price of the RS6 rotors are PITA.

the diameter,overall height is way just fine.

[Wrath]

Thuppu,
actually,i really want the rear brake to do its job more.our car has known to be not a well balanced on brake.i feel the car dives nose
everytime with hard braking even i had stock brake calipers tho.

What do you mean by diving

[Thuppu]

I'm not sure if the diving is only a brake issue on these cars..? What happen when it dives and you have too strong brakes in the rear?

[Wrath]

True, then i could be dangerous, but hopefully in theory it should settle both in the rear and the front, but of the force with weight it´s probably wont...

[popdemonic]

Naturally,the brake bias is making the front doing more job than the rear.

[mcandmar]

Keep in mind there is a proportioning valve on the rear suspension to reduce braking pressure as the rear of the car rises. The spring connection on ours broke off years ago and we haven't noticed any side effects without it, might be worth testing with it disconnected and see if it improves things for you.

[Hammu]

V10 S6 330mm rear brake disc, urs4 rear caliper with adapter?

[popdemonic]

V10 S6 330mm rear brake disc, urs4 rear caliper with adapter?

I would consider multi pots calipers to improve the clamping force since we're going to

use the customed bracket anyway.