AP Racing vs VW Racing Brakes

[DaveB@Vagbremtechnic]

Think you'll find those discs are for the S4 and not the RS4, only 40mm difference but you wouldn't want it taking off the end of your todger.

Best price I can find for RS4 discs are 380, which when you compare to the likes of AP/Brembo/Alcon is pretty good for what you're getting.

I have some B5 RS4 calipers carriers in OEM red if you fancy some, wouldn't want much for them PM me if theres a glimmer of interest

[laurent.d]

Some news.

So, know I'm made my mind, I'll go for VWR brakes kit as they can provide them in Silver Grey without any logo and moreover with Yellow Pagid RS29 pads!!

By the way I find out something about Brakes kit weight.

I will have to check this out when my Brembo kit will be removed. But it seems that unlike VWR, brakes kit brands communicate calipers and rotors weight without pads, bracket, and bell.

For exemple:

VWR 352x32 6 pistons Brakes

·         caliper                         3.5kg
·         Bracket                         0.5kg
·         2 pads                          1.0kg
·         Disc with  bell               7.5kg (web site says 7.04 may be a mistake somewhere)

Total about 12/12.5kg

Brembo  355x32 4 pistons Brakes

·         caliper                        4.35kg
·         Bracket                        ? but it should be about 0.5kg
·         2 pads                         ? but it should be about 1.0kg
·         Disc without  bell         6kg it should be about 6.5/6.75 kg with bell

Total about 12.25/12.5kg

AP Racing  355x32 6 pistons Brakes

·         caliper                        2.8kg
·         Bracket                        ? but it should be about 0.5kg
·         2 pads                         ? but it should be about 1.0kg
·         Disc without  bell         about 6kg it should be about 6.5/6.75 kg with bell

Total about 10.8/11.05kg

By the way my Brembo 328x28 4 pistons brakes kit shouldn't weight 8.45kg as I thought but:

·         caliper                        3.45kg
·         Bracket                        ? but it should be about 0.5kg
·         2 pads                         ? but it should be about 1.0kg
·         Disc without  bell         5.1kg it should be about 5.6/6.85 kg with bell

Total about 10.55/10.8kg

[RedRobin]

^^^^
If anyone needs to know, my AP Racing 4-pots weigh a total (everything) of 10.6kg each. Weighed at AP HQ in Coventry and witnessed by myself.

Oem VW Mk5 GTI front brakes (everything) weigh 15.1kg each. Also weighed at AP.

[MAT ED30]

you will be very happy with them mate they are great brakes 

[laurent.d]

@Redrobin,

What size are your brakes?
Are they 328x28?

The Calipers are 2,6kg
Rotors 5 kg
According to my estimation they should be 9,6/9,85kg

So I under estimated from about 1kg the other brakes kit.

Brembo  355x32 4 pistons Brakes

Total about 13.2kg

AP Racing  355x32 6 pistons Brakes

Total about 12kg

Brembo 328x28 4 pistons brakes:

Total about 11.5 kg

That mean that for the same size, they all weight +/-1Kg the same.


@MAT ED30

I hope so because I'm not 100% happy with brakes until now.

[RedRobin]

@Redrobin,

What size are your brakes?
Are they 328x28?

The Calipers are 2,6kg
Rotors 5 kg
According to my estimation they should be 9,6/9,85kg

So I under estimated from about 1kg the other brakes kit.

....330x28 IIRC but total weight is definitely 10.5kg.

[Andy]

i was looking at different bbk sets for my car only to fill the 19" alloys i have on.I looked at vwr kits etc but i couldn't justify paying £300 for a set of discs for what i wanted so i went for the r32 set up,as mentioned they are heavy but a whole lot better than my standard 288mm discs up front

[the bruce]

Open grilles, or a holesaw on the normal ones with a venturi.
Run through the inside of the engine bay (zip tying to the liner) and exit the arch liner opposite the forward wishbone leg
Route over the wishbone.
Remove or modify the splash shield, point duct to centre of disc, not the friction face.

Use joints at the the arch liner, as a 90degree bend will rub through a pipe. Also, use metal zip ties near heat sources.

I'd also recommend anti-crush sprung neoprene hose.

Tony, any pictures of this?

[tony_danza]

No, sorry. I'll find some of others though so you can see the idea.

[fuscobal]

Another noob question. What should be the minimum thickness at wich a 30mm disc can be used ? (or at what thickness it must be replaced ?)

[DaveB@Vagbremtechnic]

Depends on the airgap of the disc, for example I have some rather chunky 34mm discs in front of me from an RS6 the min thickness stamped on the edge of the disc btw is 32.4mm.

The thinner the disc generally the less material you have to use up (but not always) two piece rotors from Brembo and AP nearly always have new thickness less 1mm as min thickness.

If the discs are newish it will be stamped on the side (This is also a good way to tell if you're discs originate from within the EU)

[fuscobal]

I have OEM R32 discs 345x30mm. I hope I will be safe to 28mm (haven't measured them yet but have 1 Nurburgring and 2 Hungaroring track days with them > something like 400-500 miles of track use)

PS : Dave, I've sent you a mail for a friend of mine who's in a need for a good brake system for his S3 8L 1.8T !

[Andy]

with the r32 front  set up is 345mm the biggest disc you can fit

[fuscobal]

Here's a kit that looks pretty promising > http://cgi.ebay.co.uk/Audi-S3-17-Race-Rally-Spec-6-Pot-Brake-Kit-CMB0497-/140351021769?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item20ad92a2c9 . What do you know about compbrake manufacturer ? 330x32mm is a pretty thick disc and fits under 17". Don't know if it's 5x100 or 5x112 (they don't say wich S3) but the price seems good to me !

These are for mk5 platform > http://www.compbrake.co.uk/cars/vw/golf-mk5/cat_284.html

[danishmkvgti]

Here's a kit that looks pretty promising > http://cgi.ebay.co.uk/Audi-S3-17-Race-Rally-Spec-6-Pot-Brake-Kit-CMB0497-/140351021769?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item20ad92a2c9 . What do you know about compbrake manufacturer ? 330x32mm is a pretty thick disc and fits under 17". Don't know if it's 5x100 or 5x112 (they don't say wich S3) but the price seems good to me !

These are for mk5 platform > http://www.compbrake.co.uk/cars/vw/golf-mk5/cat_284.html

The picture shows a disc with 4x??? fitment