tires

I was wondering what are the biggest tires i can fit with a 3 inch lift without and other modifications?

No other mods at all? No trimming of sheet metal?

Probably 31x10.50/15 on OEM 15x7 rims.

being 18 and still having to park the car in the driveway of my parents house im trying to submit to some of the wills of my mother lol. I got stuck in the mud last week, which as anticipated was tons of fun and coming home with the car caked in mud as well as the inside met I was met with the wrath. Well worth cause I was in my XJ!! So 31's will do without serious rubbing?