Dumb brake disk Q. Are these on the correct way?

[AndyA]

Sorry for the basic question here but I thought the grooves should be spiralling towards the direction of travel for the pads to bite into? Are these on back to front?

 

[STODGY]

this has been talked about for many years :excited: i think if the vents inside the disk are uni directional/straight it doesn't matter

id say those are correct

 

[Foxspeed]

thats how i would fit them...

 

[AndyA]

Cool thanks guys I remember this debate in the mk1 mx5 circles but I can't remember the conclusion!
Andy

 

[PAUL JA]

As above it’s all to do with the disc internal vanes, if they are curved then they need to be mounted like this
http://www.apracing.com/Info.aspx?InfoID=75&ProductID=30

If they are straight I would mount them as you have done

 

[turkie172]

 

[Pav]

that's how i fitted mine..it doesnt really matter though..seen many fitted the other way round on factory cars and discs..

 

[AndyA]

Thanks for the replies guys!