New BFG AT tire w/ old BFG AT tire question

I have an old (prob 5 years or so) BFG AT that has been a spare.

I'm thinking of buying a new one, and match it up with the old one to run on the back end.

The spare has been inside, so it's not cracked or rough, still looks brand new.

Anything wrong with this?

I understand this is not the best scenario, but I'm not sure it's instant :skull2: either.

What do you think?

-Mike

Ive done it many times, mixed matched different generations of the same tire. Have a good time...