The best way is to put the whole set from halfcut if you can affort it.
the disc you bought have a same diameter and thickness with your rear brake set?
I'm having a dilemma here.
Just some info beforehand, I'm on a 15x7" wheels wrapped in 195/55/15 AD07s.
Its on a front wheel drive and full lock LSD.
I'm having issues with traction and I'd like to seek...