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D3 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc.

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Old 24th April 2020, 10:22 AM
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roberto roberto is offline
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Default A8 D3 rear Disc (several sizes) is the same Caliper used
looking into larger rear discs im finding several sizes are available.
looks like 335mm are the biggest !
so i need to know the following please

can i use the same caliper ?
i know i have to buy the apropriate caliper carriers too
cheers all
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Old 24th April 2020, 10:31 AM
MikkiJayne MikkiJayne is offline
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Yes, the caliper is the same from 280-335mm. Just the carrier changes.
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Old 24th April 2020, 12:37 PM
NightOwl NightOwl is offline
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Will not recommend to increase the size in the rear if you are not doing the same in the front, or else you will upset the brake bias.
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Old 24th April 2020, 02:17 PM
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roberto roberto is offline
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Quote:
Originally Posted by NightOwl View Post
Will not recommend to increase the size in the rear if you are not doing the same in the front, or else you will upset the brake bias.

Already got S8 fronts on
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Old 24th April 2020, 03:26 PM
NightOwl NightOwl is offline
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Quote:
Originally Posted by roberto View Post
Already got S8 fronts on
Oh ok, then I highly recommend to mount the same in the rear, because now you've already upset the brake bias. I did the S8/W12 brakes on mine a few years ago and did the fronts first and the rear the day after. In between I had a test drive and the balance of the brakes was horrible! The car nose dived heavily under braking and if I used brakes in corners, it under-steered a lot. After finishing both the front and the rear, the brake balance is perfect.

Tip, also change to S8 anti sway bars.
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2006 Audi A8 3.0 TDI Quattro Sport
A8 W12/S8 Brakes front and rear (385mm/335mm)
Focal and JBL speakers, Helix amps
S8 anti-roll bars front and rear
Complete rear LED taillight
Xenon fog lights
All interior LED
S8 rims 9x20"
Stage II tune
S8 Grill
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  #6  
Old 24th April 2020, 03:39 PM
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roberto roberto is offline
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Quote:
Originally Posted by NightOwl View Post
Oh ok, then I highly recommend to mount the same in the rear, because now you've already upset the brake bias. I did the S8/W12 brakes on mine a few years ago and did the fronts first and the rear the day after. In between I had a test drive and the balance of the brakes was horrible! The car nose dived heavily under braking and if I used brakes in corners, it under-steered a lot. After finishing both the front and the rear, the brake balance is perfect.

Tip, also change to S8 anti sway bars.
Sounds good, cheers,
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Old 25th April 2020, 07:52 PM
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homer simpson homer simpson is offline
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Quote:
Originally Posted by roberto View Post
looking into larger rear discs im finding several sizes are available.
looks like 335mm are the biggest !
You could go 356mm but then we are talking ceramics
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