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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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  #11  
Old 30th May 2018, 04:51 AM
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Norretal Norretal is offline
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The insides of my D3 discs were exactly like that when I replaced them a few years ago, in fact almost 50% of the braking surface was corroded away.

I replaced them for cosmetic reasons but immediately realised how much braking performance I'd been lacking
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Audi D3 S8 - 2007 - V10. B&O, Phantom Black, black and silver interior, and still completely standard with everything working as it should

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  #12  
Old 30th May 2018, 02:18 PM
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The_Laird The_Laird is offline
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So why do the insides of the discs wear so badly and the outside is fine?
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #13  
Old 30th May 2018, 04:09 PM
MikkiJayne MikkiJayne is offline
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My theory is that they trap moisture. While the car is stationary, the splash plates and suspension gubbins prevent air circulation so any condensation just hangs around on the surface, whereas the outside of the disc gets fresh air through the wheel spokes.
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  #14  
Old 31st May 2018, 08:49 PM
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David's8 David's8 is offline
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I had exactly the same thing with my other car (Freelander 2). Outsides were smooth and evenly worn across the complete face. At one MoT the garage showed me the inside faces which were similar to Jims and with the pad probably acting on less than 50% of the face with a corresponding decrease in braking efficiency.
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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  #15  
Old 31st May 2018, 09:19 PM
MikkiJayne MikkiJayne is offline
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I changed my rear discs today - they were just the same. Barely even worn, but rusted beyond recovery
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