Max Tire size for 2002 Sport trac

Hi i ws wondering wat the max tire size i can get on my 02 sport trac 4x4 my current tires are 255/70/r16 i have no lift on my truck just want to get a bigger tire. Thanks in advance...

265/75R16 would be about max. I know the 285 series will rub.

265/75R16 would be max. I know the 285 series would rub.