without changing you hubs, the biggest you can go to is the ones you've got - 239mm (solid or vented depending on your callipers).

to go any larger you will need to change you hubs......

then your 'easy' options are:

256mm from a 2.0 8v Mk2
280mm from a 2.0 16v Mk2 or 1.8 20vT Mk3
305mm from a 1.8 20vT Mk3 Ibiza Cupra R (Brembo 4-pots)
 
ooow man that sucks!! lol

andy j o wise 1 by any chance would u no where i could get some from and wot i would be looking at lol
 
Are the calipers on 280's the same as 256's? Would i just need a different caliper carrier to go from the 256 to the 280's? Will 280's fit under 14" wheels as well?
 
280s wont go under 14". and the callipers are different for 256 (8v gti) and 280mm (16v)

passats/golfs/ibizas/cordoba blah blah blah all share the same front hub/brake set up. just watch out you dont end up getting 5 stud hubs.
 
am i right in thinking that since the 16v's come with 16" ronals standard the 280mm's wont fit under 15s? as im needing new disks and pads as mine are warped , but i quite fancy having bigger brakes to suit my engine mods im planning?

thanks cole
 
thats fine then , just got new wheels so id be gutted if i could fit them under the wheels :D