My tires are badly worn, and since it is Christmas, I am needing to make do with a used set until after the Holiday season. I have a 1995 F-250 which I usually run p235/85/16, a friend of mine has a decent set of 7.50 R16 LT that he is willing to give me. Will these fit?

 

You didnt give a complete tire size.

Rand

 

The 7.50's are about 1 1/2" narrower than the 235's, but they will probably fit on the wheels OK. I'm not sure how they compare height-wise.
Just make sure they aren't 16.5's.