Hub centric spacers with OEM rims and tire size?

I'm getting ready to add a 2.5" lift. I like the rims, seems a waste to can, I also feel bad about the OEM tires as I only have 6k miles but they really suck off road.

Anyways what size tire is appropriate without running risks of bottoming out and eating a fender or have tires turned in while dipping down and eating a fender?

Also would like a little wider tire and I was looking at hub centric spacers. Are they safe, will they tear up bearings, same as an after market rim as far as load? Finally what would be a good thickness? Looking for reasonable and keeping in mind going over good Rick's and down areas where both tires are literally riding the sides. thx

 

Hey OP. Not trying to be a dick, but grab a quick search. There's only about a hundred thousand posts about this.

G.