AP's rumbling after track day?

[jibm]

Can anyone help, is this normal?

after bedford yesterday still they same after 60 mile drive home?

[shimmy]

Originally Posted by jibm

Can anyone help, is this normal?

after bedford yesterday still they same after 60 mile drive home?

are you using DS2500 pads?

[jibm]

Originally Posted by shimmy

are you using DS2500 pads?

yes they are i think, they are the ones that come with the kit

[Bealo]

I use RS29 in mine and i get some rumbling on mine after a trackday day but my discs are getting worn so that might have something to do with it.

[shimmy]

its unfortunate but DS2500 come with the Kit but are not suited to track days on the front callipers on e46

normally the cause of this is pad deposit, a layer of pad adheres to the disc (which is normal) but with DS2500 and the high temps at Bedford chances are the layer is not even and causes rumble, even to the point if thinking discs are warped (but they probably are not)

I did exactly this at Bedford 3 years ago. AP skimmed the discs but in real terms the best way to deal with it is to get some RS29 and run them hard. They should clean up the disc especially if the disc is new alternatively if you arent doing many track days , whip the discs off and gently sand down the face of the disc by hand and the pads and put it back together again.

there is a chance road use will cure it but it may take some time.

[jibm]

Originally Posted by shimmy

its unfortunate but DS2500 come with the Kit but are not suited to track days on the front callipers on e46

normally the cause of this is pad deposit, a layer of pad adheres to the disc (which is normal) but with DS2500 and the high temps at Bedford chances are the layer is not even and causes rumble, even to the point if thinking discs are warped (but they probably are not)

I did exactly this at Bedford 3 years ago. AP skimmed the discs but in real terms the best way to deal with it is to get some RS29 and run them hard. They should clean up the disc especially if the disc is new alternatively if you arent doing many track days , whip the discs off and gently sand down the face of the disc by hand and the pads and put it back together again.

there is a chance road use will cure it but it may take some time.

thanks Shimmy i was thinking i had fooked them, can RS29 reach hard enough use on the road to do the job?

[shimmy]

they ought to have the bite but you might need to get the temps up with some spirited night tme driving

might not go immediately but quicker than S2500