Tires
 

Will I need flares if I get tires that are 35's?

Depends on your offset of the rims (should you choose aftermarket rims) and state laws.

Completely depends on width of tire and the truck you have. I have 35 12.50 R20 Open Country AT II. On stock ford rims. I stick out maybe 1/4". No Bushwackers needed.

If you get a bigger offset wheel and they throw rocks, mud and gunk up the side of the truck I would undoubtedly throw them on. If you don't, the truck not only gets thrashed, but you will look like frogger out on the road.