Just looking for opinions. I am thinking about putting a 3" body lift kit on my FX4. What size tires do you recommend without changing rims if possible. I have 18in stock rims. And would it look ok. The looks is what I'm going for. Not doing too much off roading.  

What kind of FX4? F-150? Ranger?  

It is a F150.  

Large body lifts should be avoided because they cause problems of their own with linkages, steering and cooling to name a few. Best to limit it to 2 inches or less if you must lift body.  

To bad nobody sells smaller than a 3" body lift, not that I've ever seen.

You can fit 315's on there with a bodylift.

But, I would be more inclined to say if you are going to keep the stock wheels to do a 2" leveling kit and a set of 305's... I think you'll be happier in the end.  

I have seen a lot of 2 inch kits for Fords but not that year and actually I have not seen a 3 inch either for that year when I just did a quick search at several places.