Hmmm, will have to confirm the list. However, I've been doing extreme light braking due to like the metal grinding sound. The car does shudder under high speed braking but, I never do that because I know my rear brakes are on their way out. Will have to check the grooves and the lip.
Also, how much is it to get new pads + machined vs new pads? Just trying to get a ballpark figure (Not a quote haha).
edit: by grooves do you mean like.. cut brakes? (like aftermarket?)
And by the lip do you mean the rusty old looking housing thing that goes around the brake?( Dammit, wish I knew more about cars so I could just give the proper name of parts) If so, that's sitting further out than the disk. The front however, are completely different where the disk is HEAPS in front of that rusty housing looking thing.