dunno that tire size but a 33x12.50 is hard as hell to fit on a 4runner with only a 3inch lift. need 4 inch backspaced 16x8 wheels most likely and maybe a 1 inch body lift.
a 33x13.50 which is the same width as a 315tire which most 315x75x16 are 35 inch tires just seems way too wide.
I know it will be close, I saw that Leesdawg did it with ProComps but he never mentioned his backspacing and never answered back.
I was looking at IROKs because I could get a decent deal on them, but after speaking to my wife we've decided to hold out and get some ATs once the stockers are gone. We popped a stock tire when I was out recovering my truck in what was like the area in the "never wheel alone thread". I don't want to buy another stock tire so I was looking at my options. We'll probably keep the 17" rims and get some Nittos.
FYI a 315/75/16 is a 12.50, even skinner than the tires I was looking at.
that seemed like a pretty harsh way to learn your limitation. Sorry I didnt reply back. I never found out my backspacing. I let Big T Tires figure all that stuff out and just asked him to stuff it in there and let me worry about the rubbing. which I did with a little funtime behind the dremmel.....
Lee
BTW, Im sellin my tires and wheels if you want to look at them in the classified section.....