These are what is needed to mount calipers to clear the larger diameter disks.
The more powerful braking force comes from the diameter.

https://www.ebay.co.uk/itm/OEM-carrier-front-brake-caliper-support-bracket-312mm-VW-Golf-MK5-MK6-Audi-A3-8P-/142476141556?hash=item212c3d63f4

^ Also the larger surface area of the disks would make them cool more efficiently. 

23 hours ago, elv73 said:

I thought the 170 had larger calipers than the 140?

 

identical calipers

Does the 150ps have 140 or 170 brakes?

On 03/10/2019 at 15:44, elv73 said:

I thought the 170 had larger calipers than the 140?

 

Same calipers, just use larger carriers to mount them so they're spaced slightly further outward to accommodate larger discs.

Are the carriers from a Golf V GTi with  312mm discs compatible?

5 minutes ago, J.R. said:

Are the carriers from a Golf V GTi with  312mm discs compatible?

 

Yes, exactly what I did on mine.

Thanks Techie, with that knowledge I have just snapped up a set that I had been looking at on ebay, calipers, carriers and grooved discs, they all look in shocking condition but were cheap and the carriers must at least be functional, if the discs clean up then even better, cant see me using the calipers though without a refurb.

 

https://www.ebay.co.uk/itm/333351863133

Edited 8 October, 20196 yr by J.R.