14" SBP Wheels
I believe a 245/60R14 is the widest you will find these days. I think a 275/60 has been gone for some time. Fat tires for a 14" wheel are getting very difficult to find, new.
I did find these but 24.49" height would be on the short side and $276 for BFGs is questionable.
BF Goodrich Blackwall - 265/50R14
http://www.cokertire.com/bf-goodrich-blackwall-245-50r14-1.html