I have a 5.0 notch police interceptor with 16x8.5 pny rims. I was wondering what is the largest size tires that will fit in the back and some midsize tires for the front

 

depends on backspacing

 

i think the biggest ive seen because i have the same rimsize but on a 94 is the mt et streets and they are 255-50-16 i believe might be 45 1 of those though... thats for a drag radial though, i dunno bout a street tire

 

A 255-50-16 is gonna figure out to be around 26in tall 10in wide so somone may have a better idea i would try measuring 13in up from the center of the wheel since half the tire is gonna be on the ground clearence side of the wheel and see where it puts you