Brake disc question

4.2 V8 32v Naturally Aspirated - 414 bhp
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Stairs
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Brake disc question

Post by Stairs » Tue Mar 03, 2015 8:17 pm

We all love a brake question don't we?

I have just bought some front rotors off ebay, they are OEM but they both have the same part number... Is there any difference in the two or is it just a part number thing but both sides are actually the same? There are no marks on the actual discs that really tell you what they are...

Anyone?

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MikeFish
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Re: Brake disc question

Post by MikeFish » Tue Mar 03, 2015 8:22 pm

The front discs are not handed like the rears. No idea why. But for whatever reason they are the same so have the same part number. This means they look odd as on one side the drilled holes go the wrong way.
The rears are handed though so have 2 part numbers.

Stairs
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Re: Brake disc question

Post by Stairs » Tue Mar 03, 2015 8:26 pm

I just turned to my misses and said, I bloody love this forum, you watch someone will reply in the next 10 mins with the answer!

So thanks Mike!

Stoke Audi says there are two part nos for the front, but if it actually makes no difference then I'm fine with that, what does handled mean for the rears though?

murph22
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Re: Brake disc question

Post by murph22 » Tue Mar 03, 2015 9:30 pm

Stairs, for some reason Audi have a specific disc for left and for right on the rear. I dunno why this is, maybe someone more
technical might be able to shed some light on it.

RS6BRIT
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Re: Brake disc question

Post by RS6BRIT » Tue Mar 03, 2015 10:30 pm

If you go and take a look at the rears on your car you'll notice that the holes are sloped in the same directify as you look at them. If you look at the fronts you'll see that the slope in opposite directions as you look at them. This is because the rears are actually made individually for each side (handed) where as the fronts are the same disc just spun round(not handed) if that makes any sense :drink:

Stairs
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Re: Brake disc question

Post by Stairs » Thu Mar 05, 2015 4:07 pm

It makes sense.... Just odd that they didn't do the same with the fronts.

Thank you everyone for the advice.... As always!

Bogyoch
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Re: Brake disc question

Post by Bogyoch » Thu Mar 05, 2015 6:19 pm

It amazes me that Audi went to all the trouble to have fully floating front discs with nice bells and bobbins, and then bolt blooming great chunks of cast iron to them that are no good to man nor beast. At least there's plenty of meat to them for skimming.

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Covkiller
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Re: Brake disc question

Post by Covkiller » Thu Mar 05, 2015 9:58 pm

Buy AP racing disks. You keep the bobins and replace the discs only when they are worn. So they work out the same as OEM but are much better quality and engineered to a much higher standard.
:nogarors4:
RS4 B7, Mugello Blue, K&W V3 & HR ARBs, set up by Centre Gravity, Milltek Valved Non Res & cat bypass pipes, BMC air filter, braided hoses, DOT 5.1, Terraclean, MRC Full Carbon Clean, MRC remap 448PS 477NM, 20" S7 alloys with 4mm spacers & Hawke spigots 66.6 > 57.1, AP Racing front discs. Sold Sept 2019. Now rocking an F80 M3

Lukes3
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Re: Brake disc question

Post by Lukes3 » Thu Apr 16, 2015 11:02 pm

Didnt want to start a new thread for this but...
Where is the cheapest place to get front discs from at the moment? £624 is cheapest i have found an that stoke audi.
Cheers
Current-saloon rs4,Full decat Xpipe miltek,cold air feed,BMC air filter, TTS supercharged, MRC stage 3 L/C F/S,hell s+s brake lines,AP racing rotors + vagbremtechnic bells, kw v3s clifford 650mk2

Gone-audi s3 8p stage2+ with loba lo400 turbo.

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