UK-POLOS.NET - THE VW Polo Forum

Dink wrote: Sun Jun 14, 2020 2:31 pm 232mm non vented rears on the blue gt (same as the gti)

i upgraded to the 256mm vented rear and it helped a lot with higher speed braking

What callipers, carriers and backing plates etc did you use?

Aquavalver wrote: Mon Jun 15, 2020 12:58 am
What callipers, carriers and backing plates etc did you use?

i used some off a mk4 golf but they ended up being off a 4wd so need an extra spacer on the hub

i'm trying to get some replacements off a mk1 seat leon cupra R

I wonder if MK4 Golf R32 rear calipers would fit?

I was looking at the Brembo website and for some reason it doesn't list 310/312 being availabale in the Max style discs. But there is a Brembo Max disc in 310/312 here:
https://www.autodoc.co.uk/brembo/1657273 which has the same stud pattern, same thickness, same height, same centre hole-in fact everything looks the same, so why isn't it listed for the 6R/6C GTI/WRC Polo?

The brembo disc has an 8N0 part number reference, meaning it's the old Audi TT.
Should be OK.

The rear calipers of a Mk4 R32 will fit, yes, but the caliper carriers won't. You need FWD rear callipers, 4WD will not work.

iichel wrote: Wed Jun 17, 2020 6:44 pm The brembo disc has an 8N0 part number reference, meaning it's the old Audi TT.
Should be OK.

The rear calipers of a Mk4 R32 will fit, yes, but the caliper carriers won't. You need FWD rear callipers, 4WD will not work.

Ah yes-I forgot the R32 was 4WD!

Say if I was to use larger front Brembo callipers with 323 or 334 discs, would there be any VAG backing plates that would fit? Would the backing plates from the VAG cars that have the 323 or 334 discs fit? Or could they be quite different?

Perhaps you can have a look at the Audi TT 8N?

iichel wrote: Sat Jul 04, 2020 5:08 pm Perhaps you can have a look at the Audi TT 8N?

Yes, that was one of the possibles, also the Mk1 Seat Leon Cupra R and Mk 4 Golf R32.

When people have upgraded to larger brakes, they hardly ever seem to mention the backing plates.

After looking into it more it seems the backing plates for the 323 and 334 are actually the same, so there must be more space around the 323 ones. Sadly I don't think they will fit as the Polo ones are a completely different shape and with the bolt fixing holes in different places. Of course you can run them without backing plates, but they are meant to protect the calliper parts from debris from the pads and road etc which should make them last longer. So it looks like if I want to use backing plates I'll have to use the 312 discs and chose callipers that will fit that size discs.

iichel wrote: Wed Apr 19, 2017 10:54 am
You can upgrade them to 288x22mm vented discs or 312/310mmx22mm vented discs. In both cases, you'll need to replace the wheel bearing housing.
Furthermore, it will require new discs (obviously), new brake calipers, pads, dust cans and caliper carriers. This requires removing the entire old installation.
After the replacement, you'll need to bleed the brakes and align the front axle.

In both cases, you'll need to replace the wheel bearing housing.

I was able to upgrade to 288mm in front without this. What could be the issue after that. Also do you have the part number handy for the wheel bearing housing.

Also your other ask was to align the axle. What does it mean?

Sorry for being a noob here.

Thanks in advance

you will need wheel aligment (/ tracking) .

amer6R wrote: Thu Mar 17, 2022 6:18 pm you will need wheel aligment (/ tracking) .

Thanks, i got it. Not sure about wheel bearing casing still. Do i need to change the wheel hub as the brakes could fit in older hub also

amer6R wrote: Thu Mar 17, 2022 6:18 pm you will need wheel aligment (/ tracking) .

Thanks, i got it. Not sure about wheel bearing casing still. Do i need to change the wheel hub as the brakes could fit in older hub also

Piyush7243 wrote: Fri Mar 18, 2022 12:37 am

amer6R wrote: Thu Mar 17, 2022 6:18 pm you will need wheel aligment (/ tracking) .

Thanks, i got it. Not sure about wheel bearing casing still. Do i need to change the wheel hub as the brakes could fit in older hub also

If your car has removable brake pad carrier you can reuse the wheel bearing assembly.

This one works only with 256 mm

This one is the one you need for 288mm ( 310, 312 mm etc.)

Yes it is removable so i am reusing it. Many thanks for the explanation

It seems that some cars with 256 discs share same caliber (1K0615124) as the ones with 288 discs?

If so then when upgrading from 256 to 288 only thing that needs to be replaced is the caliber carrier and discs? Am I getting it right?

Edit: Will be ok if situation is as mentioned above. Wheel bearing housing needs to be the one with removable caliber carrier. My Polo has the one with fixed caliber carrier so I need to also change the whole wheel bearing housing setup.

I will do all that but not just because of the brakes, car has done +200k km and has many parts that are still from the factory there. Good idea to refresh the front of the car. Time to hoard some parts and then take the car to shop to get updated.