Searching on here and on Google will do wonders for you!
But since I am a nice person I will post up my pics of my wheel/tire set up. 31/10.5/15 on AR767 15x8 4" BS.
They don't stick out that much maybe an 1.25"-1.5" from the fender
Another one where they are not clean. They will throw whatever gets in the tread if you have stock fenders.
Here is a shot with stock wheels that are 15x7 5.25" BS. The tires were completely tucked up under the jeep with them.
And another Just to give you the point.
Okay, I am done showing off my jeep!
Anyways, a 8" wide rim is not going to be farther out than the side wall for a 10.5" wide tire... 8"<10.5"... IMO, an 8" wide rim is ideal for a 10.5-12.5 wide tire for tread wear and for looks. Hoped this helped ya.
Oh and if you haven't already, use the search bar!!!!!!