9.75 will fit no problem at the rear, you might need to roll your arches . Also you will need to strech your tires a bit (you can find a thread of mine somewhere here, to see tire sizes), but nothing extreme.
I had rubbing issues rather at the front,, if you going low, you will rub through arch liners, thats a given and will touch the metal around bumper clips. I saw peeps relocating bumpers clips which what I will do too. I fitted SPC cambers at the front and back to fix alignment but front rubbing got worse as a result of that.
How mine sits on xxr, they are fairly budget brand so dont expect quality wheels or even paint finish.