ST170 disks (Ebay) , Mondeo MK3 carriers and calipers (mondeospares.co.uk)

You just need to take the holes on the hubs out to 12mm to accept the carrier bolts.

PICS:
240mm standard MK4 Fiesta 1.3 in 15" alloy



300mm setup in 15" alloy - it wont turn freely, caliper will need a trim



300mm setup in 16" alloy - fits fine!



Results may vary! the 15" alloy is a Mondeo Ghia item...
I have chopped up the alloy, to allow me to trim the calipers to the correct size...

Bonus:
ST170 rear brake assembly in 15" alloy

 

I've had the 300mms inside many 15" wheels.

 

i have 304 ap's under a 15in wheel

 

need to get motorsport wheels for 15" really i have team dynamic pro race 3 for my 300mm setup

 

there must be a 15" ford rim that clears surely?

 

Ford puma wheels. And I've had escort series 2 rs turbo wheels over the st170 set up.

Mk5 fiesta zetec s 15" wheels fit aswell.

 

My 300mm upgrade on My XR4Ti..... 16" wheel

before......



After.....

 

St170 calipers have abit more play than mondeo other than the bleeding nipple which is the closest thing to the rim by a few mm lol.

 

need to paint them alloys black

 

Mk3 mondy calipers and ST170 brake discs on my Puma.