Brake Rotor Marks

[turbomuz]

Can anyone tell me what causes these marks on the brake rotor. Are the pads falling apart?

Muz

[Turbo6man]

No, the pads aren't falling apart. You've simply got no pads left. Those marks are typical of steel on steel.

[Ninka]

Looks like your rotors have been machined at some stage, correct?

I think it looks like the rotors have been allowed to accumulate significant rust at some stage, and this is now flaking off resulting in this appearance.

Only way out= machine again, or start using your brakes hard to wear this rust off

[Dagabond]

It look's like hot spot's or hard spots in the metal of the discs to me, which is causing the pad's to slightly skip the area and leaving the trailing mark's...

[THEMESHMAN260]

That is factory pore blowholes I see them every day in the scrap bin go back to dealer

And replace not machine machining will only open it up

[kawerx]

It look's like hot spot's or hard spots in the metal of the discs to me, which is causing the pad's to slightly skip the area and leaving the trailing mark's...

[kawerx]

looks like hot spots.best to replace.ford only cover rotors up to 50000km.could try machining again.

has anyone marked thier rotors to see if you get yours back when ford machine them?

because they do so many they might rotate them with other cars to minimize time on the hoist.

[turbomuz]

Thanks guys, this gives me something to put to the dealer. It was already going back to "resolve" a recurrance of brake shudder following machining and shims 2000km ago.

Muz

[Trough Lolly]

get some slotted DBA's or RDA's for the front. the stockers just arent worth bothering with even if it is a warranty job! or ask them if u can pay the difference between stockers to slotted. just an idea

[dattoman]

Hard to say based on 2 pics and no actual info

Pads may be leaching resin onto disc

Discs may have been machined too many times and are thin........ so heat properties are lost (causing hot spots)

May have picked up contaminants in the pad

Auto?.... sit on the brakes after hard stops..... allowing resin to deposit on the rotor ?

Drive thru puddles or car wash? Water thru wheels onto hot disc is not a good thing.