Another noob question

[Lemay88]

Hi guys,

Here I am again with another noob question....but like my dad always said, better ask and learn than stay ignorant.
I am doing some winter cleaning/maintenance (guezz, winter is long up here in Canada) and while cleaning the fender wells and suspension assembly, I noticed that my disk brakes are "loose". Without the wheel, I can wiggle the disks and the only thing preventing me from removing it are the galopers. I know that when the wheel is in place, the disk is not moving and is in perfect alignment with the galoper...but I was wondering if it was normal that the disk wiggles without the wheel in place.


Thanks

Ben