View Full Version : B5 S4 Brakes On A 98.5 A4 1.8t??????

11-25-2005, 07:09 AM
I know i should do a "search"...I did and got mixed answers..Will the 2.7t calipers fit on a 98.5 a4q??If so should i do the rears also? what are the best rotors for the money?
thanks for all your help..


11-25-2005, 07:16 AM
No, The hub mounting point is different and would require an adapter of some sort.

11-25-2005, 07:21 AM
thanks , i did more research and i guess they wont fit...

11-25-2005, 11:17 AM
just get the a8 upgrade...very affordable

11-25-2005, 12:28 PM
I think im going with the porsche 986 calipers..You can get the adapters for around 200.00 and the calipers used for around 150.00 each..Then u use the a8 rotors...

11-25-2005, 06:39 PM
Why don't you just improve the items for your stock calipers? Bigger rotors don't mean you stop quicker... Get braided hoses, decent brake fluid, and decent fast road pads, and bish bash bosh, you have decent brakes...

11-26-2005, 10:25 AM
the s4 rears will bolt up..

11-26-2005, 11:08 AM
I've got the A8 brake upgrade and am quite happy with it. I realize that it is more aesthetically beneficial than anything else, however, braided brake lines, better fluid and pads (as Toff mentioned) add to better performance. Like anything else, it all comes down to what you want to spend. Good luck.


11-26-2005, 01:57 PM
hey baldie, did you change your lines/fluid/pads along with the a8 upgrade? Was it a worthwhile difference in braking performance?

I'm looking for an inexpensive brake upgrade for the late winter early spring because I want to try my hand at some road courses next season with Marked001 and audisnapr.

11-26-2005, 11:33 PM
A8 upgrade with decent pads, fresh fluid (stay away from ATE Blue), and good lines is very nice. be sure to bleed them well and bed them properly.

this is on stock suspension (the rear sits a little lower than the front), street tires, and street pads braking from 85 to roughly 30. with track tires and pads it is a whole difference animal. slowing for corners becomes much more fun.


11-27-2005, 08:59 AM
A4jedi, I haven't done the lines & fluid yet. I did replace the pads with mintex reds. It was a vast improvement over what I had on there because the others were shot.

As onemoremile mentioned, the lines and fluid (done properly) will make a big difference. I've read a post or two that say the brake lines didn't make a difference, I beg to differ. I've driven vehicles (before and after) and there was definitely an improvement. I did my whole setup (A8 upgrade in front, zimmerman cross-drilled in back, Mintex reds all around) for under $600. Add lines & fluids (about $125) and you have a nice upgrade. Hope this helps.

11-27-2005, 09:09 AM
A8 rotors with Boxster calipers and a 15mm spacer. This is my current set-up for winter.


11-28-2005, 03:19 AM
Braqided brake line make a big difference if you ask me. because the regulat brake lines are rubber, they will have a certain amount of flex in them, especially if they are hot. Braided get rid of that, so all your brake force goes through to the pas, rather than flexing the hoses...

11-28-2005, 10:07 AM
Sorry for the hijack... Ed, what carriers did you use for the Boxster calipers?


11-28-2005, 11:18 AM
what is wrong with ate blue and what do you reccomend?

I used to run ATE in my rx-7 and liked it a lot.

11-28-2005, 11:22 AM
the blue dye will make your clutch squeak. getting rid of the squeak isn't fun.

Ed -
nice brakes. it looks like the boxster calipers clear the 16" swing wheels just fine. i was worried that they might hit the weights or something. have you had any issues?
i think i'm going to sell the fancy wheels and rock the swings next summer.

11-28-2005, 11:44 AM
do the boxter calipers improve clamping force at all or is it just a cosmetic thing?

11-28-2005, 12:44 PM
onemoremile, you have to use a 15mm spacer to clear the calipers with the Swings. You might get away with 12mm but I'm not too sure.

SuleiUte, I bought them from a local guy and he's on Audiworld. Contact Liam in Montreal. He has sold to many members from that forum and here as well.

94jedi, I think it's a bit of both. I'm sure I could've stuck to the A8 rotors upgrade and be fine.

11-28-2005, 01:53 PM
i wonder if theyll fit under the 2.8 16's with the same spacer[confused]

11-28-2005, 05:02 PM
Originally posted by onemoremile
the blue dye will make your clutch squeak. getting rid of the squeak isn't fun.

I have the squeak. What makes getting rid of it so fun? I thought I read on AW that if you remove the ATE fluid, everything goes back to normal.

That sounds stupid now, having typed it. Wishful thinking. Damn my brakes.

11-28-2005, 08:51 PM
Originally posted by ed@audiyo
A8 rotors with Boxster calipers and a 15mm spacer. This is my current set-up for winter.

whered you ge the spacers

11-29-2005, 01:34 PM
Originally posted by offroader1006
whered you ge the spacers

From a local shop.

11-29-2005, 04:58 PM
btw I reread the comments to my question...how could running ate blue BRAKE fluid make my CLUTCH squeak??