CQ brakes with 5x112 swap. :: motorgeek.com

morris400 · **Posted:** Sat Feb 22, 2020 2:28 pm

Looking to get my 5x112 swap done next weekend i hope. I know the CQ needs new brakes and i have a good set of G60s off my S4. I know the calipers are the same, is their any issues with getting new S4 rotors for the CQ that are 5x112 or do i need to get 4x108 and drill them to 5x112? Not sure if the rotor fitment would be the same.

Same thing for the rear...with the new A4 hubs going on the rear, what rotors should i use with stock rear calipers? Will A4 1.8t 5x112 rotors be plug and play?

Thanks.

Kenny.

M2ki · **Joined:** Mon Dec 17, 2018 7:48 am **Posts:** 21

If you use B5 A4q rear hubs on your car, then use A4q rear discs also and stock calipers.

What hubs are you going to use in the front?

morris400 · **Posted:** Mon Feb 24, 2020 8:38 am

stock A4 rear calipers or stock CQ calipers on the rear? I am using A4Q rear hubs, and front URS4 Hubs machined to fit.

M2ki · **Joined:** Mon Dec 17, 2018 7:48 am **Posts:** 21

Stock rear CQ calipers with A4 rear discs.

Why S4 front hubs? I don't know what the offset will be and what brake discs you could use.

Take regular C4 quattro rear hubs, machine 5mm off and you've stock S2 front hubs. And use S2 front discs. Everything bolt on then.

S2 front hub on the left, C4q machined rear hub in the middle and C4q hub before machining.

S4/S6 uses same hubs in the front and rear. S4/S6 hub on the left and S2 hub on the right. As you can see, you will lose 5mm offset per side.

morris400 · **Posted:** Mon Feb 24, 2020 6:40 pm

Reason why S4 hubs is simple...i have them lol. What i dont have are C4 100 hubs or S2 hubs. The 5mm diference should not matter much, i can always run a spacer if i want that 5mm back.

Glad the rear swap will be simple,

Still need to know what brake rotors i need to run on the front? My gut tells me C4 S4 rotors should do the trick?

M2ki · **Joined:** Mon Dec 17, 2018 7:48 am **Posts:** 21

morris400 wrote:

The 5mm diference should not matter much, i can always run a spacer if i want that 5mm back.

You also will need a somekind of spacer to move the caliper carriers 5mm inwards.

PRY4SNO · **Posted:** Tue Feb 25, 2020 10:51 pm

I used 323mm A8 rotors, they were cheap and easy to find. But they did need 2mm spun off the inside to clear the TRE.

M2ki · **Joined:** Mon Dec 17, 2018 7:48 am **Posts:** 21

PRY4SNO wrote:

I used 323mm A8 rotors, they were cheap and easy to find. But they did need 2mm spun off the inside to clear the TRE.

With Girling 60 calipers?

audiPete · **Posted:** Wed Feb 26, 2020 9:32 am

If you use the C4 G60 calipers you'll find that you will need to swap sides otherwise bleeders will be in the wrong place.

PRY4SNO · **Posted:** Thu Feb 27, 2020 12:43 pm

M2ki wrote:

PRY4SNO wrote:

I used 323mm A8 rotors, they were cheap and easy to find. But they did need 2mm spun off the inside to clear the TRE.

With Girling 60 calipers?

Nice catch. 986 BoxsterS calipers. Not sure how I missed including that.

audiPete · **Posted:** Thu Feb 27, 2020 2:46 pm

use a 5 bolt 5x112 rotor to make a template and drill the 4x108 rotor to 5x112. Last time I checked a quality 4x108 276mm rotor was less than half the price of the 5x112 version.

RennenMsports · **Posted:** Wed Dec 09, 2020 5:09 pm

Do the b5 a4q rear hubs have the same splines for the axle as the us4/6?

A1QSHIP · **Posted:** Sun Dec 27, 2020 2:39 pm

RennenMsports wrote:

Do the b5 a4q rear hubs have the same splines for the axle as the us4/6?

No. The C4 quattro chassis (UrS4/6, A6 quattro) all use the larger splined axles both front & rear.

CQ brakes with 5x112 swap.

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