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D2 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc.

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Old 16th June 2020, 09:43 PM
Readie Readie is offline
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Default Lowering springs and rear callipers/brakes

Hi all, i have just had an mot fail and need to replace a rear calliper(And disk and pads) on one side, so was thinking about what simple bolt on upgrade there is. Can I just check, the d3 w12 is a straight upgrade-correct ? I am running 19 inch wheels...
Also have rust on springs so was thinking of some slightly firmer and a tad lower...any suggestions?
Any help appreciated.
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Old 16th June 2020, 10:10 PM
MikkiJayne MikkiJayne is offline
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D3 brakes bolt on to D2 A8, but not S8 with Brembos. You'd need to swap to A8 uprights.
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Old 17th June 2020, 10:24 AM
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Architex_mA8tey Architex_mA8tey is offline
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Quote:
Originally Posted by MikkiJayne View Post
D3 brakes bolt on to D2 A8, but not S8 with Brembos. You'd need to swap to A8 uprights.
Thats true of the fronts but the OP is talking about rear brakes?
I seem to remember that there was an RS6 rear upgrade to go with the D3 S8 or W12 front brake upgrade on a D2?
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Old 17th June 2020, 10:29 AM
MikkiJayne MikkiJayne is offline
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Originally Posted by Architex_mA8tey View Post
Thats true of the fronts but the OP is talking about rear brakes?
I seem to remember that there was an RS6 rear upgrade to go with the D3 S8 or W12 front brake upgrade on a D2?
Good point. D3 rears don't work at all on the D2. The bolt spacing is wrong, plus they have the electronic handbrake.

C5 RS6 calipers and carriers work on the rear of the D2 when using C6 S6 disks, or if you machine a small amount off the hub you can use original C5 RS6 disks too (crazy money). But, you need A8L handbrake cables which are NLA

It is possible to space the D2 calipers out to also use the C6 S6 disc, using machined adapters, but I can't find where to buy them and they are non-trivial to make by hand. Thats still D2 calipers though, with their silly postage-stamp pads.
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Old 17th June 2020, 11:52 AM
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Architex_mA8tey Architex_mA8tey is offline
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Quote:
Originally Posted by MikkiJayne View Post
Good point. D3 rears don't work at all on the D2. The bolt spacing is wrong, plus they have the electronic handbrake.

C5 RS6 calipers and carriers work on the rear of the D2 when using C6 S6 disks, or if you machine a small amount off the hub you can use original C5 RS6 disks too (crazy money). But, you need A8L handbrake cables which are NLA

It is possible to space the D2 calipers out to also use the C6 S6 disc, using machined adapters, but I can't find where to buy them and they are non-trivial to make by hand. Thats still D2 calipers though, with their silly postage-stamp pads.
Oh Joy so yet again no easy solution caused by Audi's decision to "NLA" everything that suits them
Sounds like we need to have a forum on new solutions to upgrade D2 rear brakes! its one thing Id still like to have done to mine
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Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange
20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble
Next - Clean Car, Phantom Aeriel, Clean Car again, Fit Variable Back Box with remote control on/off Loudness, RNS-e, Clean Car again!
Audi A8L D3 4.2 Petrol with LPG - Oyster Grey
Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black
and some other A8's A8L's and Mercs
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Old 17th June 2020, 12:14 PM
spannerrash spannerrash is offline
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Is it just accepted that the standard S8 D2 brakes are a bit rubbish? It was one of the first things I noticed when I drove my car for the first time. Compared to my A4 of the same year which stopped on a dime.

I've replaced discs, pads, rear callipers, flex brake pipes and sorted the corrosion behind the front calliper slide plates. I've changed the brake fluid using a pressurised bleed tool but they still feel a bit lacking.
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Old 18th June 2020, 03:16 PM
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The_Laird The_Laird is offline
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Yes, they’re pretty poor IMHO. And, like3 MJ says, the rear pads (and calipers and discs) just don’t even look the part. Oh for a simple upgrade!
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