What size tires can I put on a 2004 F-150 SCrew 4X4 w/ a Daystar leveling kit?

I was thinking 33X11.50R18 or 305/70R18 which I think is the same size?

I'm going to be keeping these on the stock wheels also.

Ant suggestions on size and brand?

Thanks

 

By the way, I'd prefer some all terrains. I've been searching for something locally, Toyo, GY, BFG, etc... can't find anything.

 

You can fit a 35x12.50 with a 2.5 inch leveling kit if you keep the OEM wheels. You may want to look at the 285/65-18 (33x11.50) BFG AT KO. For some reason, there are several 35x12.50-18 mud terrian tires, but no all terrians.