Looking for BIG TIRES

I am looking for a good deal on some big tires. Like 38's to 40's..... don't get too excited, these aren't for my XJ, they are for my Suburban. Preferably for 16 or 16.5 inch wheels, but i will consider other sizes as well..... as long as they are cheap enough. Thanks.

I think I know where a set of 36x16.5 are if they are still there, for 150

That is what I am running on my suburban now, and they look TINY. I usually run 44'2 on my suburban, but I recently took about 3 inches of lift off of it. I could easily still run 40 or 42s, but I would like some 38's to 40's to put on there. Thanks tho.