Hi,
The front 340 TRW brakes are ok from facorty new .
First sign is a slight delay in the wet. Then wear out quick.
When you change them they are never as sharp or smooth, even with dealer brakes.
Its a clamp over style caliper which is on the large side for a one sided piston clamp set up , Flex and no real power on the outer clamp side .
The sliders are normally ok .
So ...
Get pads that make some dust which means they will wear in quick bed up producing a full face contact from new a lot faster.
Pads that make dust wear out which is a lot better than disc cutting rock hard pads filled with metal.
" Oh I dont want dust on my new rims "lol , you will have to have some dust if you want good brakes.
To get a friction level you need one or both surfaces to wear out .
No wear, no friction, simple,
Buy hi carbon discs and not cast iron drain lids ,
Get advice on pads, The last thing you want to hear is , " these are good they dont wear out"
Pads are ment to wear out, end off .
Cheap discs rust up quick and wear out .
The disc surface needs to be smooth and polished if the right pads and discs are fitted.
On this brake the pad should just cover the outer edge and leave about 3mm on the inner , thats full face contact.
If your discs look dull and scored with low pad wear , chances are your brakes are poor and you think they are ok .
At 340mm on a Skoda A3 Golf they should pull your shoulders forward if you go near them , yet still be smooth under a controled brake say from 60 down to 20
Also they should also put you false teeh on the dash if you hit them hard .
Mine do ,,,,,,,,,,, I dont mean my teeth lol
Andy