Will 35x12.50R18/D fit on my 2006 F150 Fx4 Scab without having to do any trimming.

 

Oh yea, I have a 2.5" Daystar Leveling Kit

 

I have 295/75/18 trail graps on stock wheels. they rub on the susp just a tad. those tire will be a little bigger so you may need to trim a little. are you on stock wheels?

 

It really depends on the rim width and backspace, stock rims might be a tad narrow but many use them without issue. You won't have any issues with the tire, if you look on the BFG web site you can see the actual tire diameter and BFG's seem to run a tad smaller. I've got 35/12.5/17 and they are actually 34.5" diameter.

 

you'll probably have to trim your valence. i have 305/70/17's(33.8") and it rubbed my valence. but like dogem said it depends on your rims and backspacing.