what size tire with 6 inch fabtech and 3 inch body

[chevhot]

i have a Fabtech 6 inch lift had 35s they were close now i put a 3inch body lift what size tire can i go to i have 18 inch rims with 4 1/2 back spacing i was looking and the nitto mud grabbers

[BIGASSZ71]

I would say you would be fine with a 38x12.50 anything wider and you might have to do some fender trimming... What kind of truck do you have?