quick question, do i have to remove my wheel to check my brake pad wear? also, can i just check 1 front and 1 rear instead of all 4? also, what's the correct method for checking pad wear at the indicator? thanx

 

Small inspection mirror and a flashlight , very simple.

 

I think generaly sell brake pads as set of 2 either for the front or rear don't think sell them individually, but could be wrong

 

I wouldn't check just one front and one rear, I'd check all four of them. You could have a problem and the pad you don't look at is significantly worn and fail to replace them because you didn't see a problem with the one you did look at.