Grooved Brake Discs - Which Way Around?

[RalphyBMW]

Just want to make sure I get this right prior to fitment!

These are my discs, which way should they go;



Thanks for your time!

 

[Ed...]

The inside arch of the groove faces towards the top of the brake caliper mate. That's how me n chappo have them anyway. If ure still stuck look at chappos profile I'm certain he has pictures with them on the correct way

 

[Ed...]

So the top disk in ure picture thee would be ure passenger side disk. Hope this helps

 

[RalphyBMW]

Brill, cheers!

 

[chappo]

yes Woody,s right mate,

did you buy them from the guy over on R/S ?

same guy i wanted to buy his carbon rear diffuser from but went on hols and mist it :thumb1:

 

[RalphyBMW]

Yes, got the discs and speedlines w/888's, looking forward to trying them out!

 

[richandgem]

It's a bit difficult to tell from that pic but the webs on those look directional. I'd say the top disk needs to go on the drivers side.

The webs on the standard disks are just round so it doesn't matter which way you put them. But as I said those look like the webbing is shaped, so u need to run then the right way otherwise air won't go between them and the disks won't cool as well

Better pics would help

 

[mark_1873]

It's a bit difficult to tell from that pic but the webs on those look directional. I'd say the top disk needs to go on the drivers side.

Yup I have the same discs (AP racing)

Top discs is the drivers side.

You'll love em :thumbup:

 

[richandgem]

Yup I have the same discs (AP racing)

Top discs is the drivers side.

You'll love em :thumbup:

I am the disk master

 

[mark_1873]

I am the disk master

You'll certainly be getting a little PM from me when my standard rears give up

 

[Ed...]

so have i got my grooved disks on wrong?

 

[mark_1873]

so have i got my grooved disks on wrong?

Got a pic ?

The only reason I know mine are on correct is that when AP package them the foil they are in has a big sticker on it with RIGHT and LEFT so you cant put them on wrong :lol:

 

[Paul]

Yeah I would agree with Rich and Mark - the bottom of the groove is the leading edge and the top should be trailing. So those pics show drivers side on top.

From what I have seen of your discs previously Woody they weren't on the wrong way round. Might just be a bit of confusion.

 

[richandgem]

Get a pic up woody, let's have a look

Oh and let me know when ur ready mark