BFG still has the T/A in 14" and 15" sizes in various aspect ratios. (I just shipped about 90 of them to Oz)

Coker is also reproducing a couple of the 50 series BFG's as well (but in blackwall only)

As mentioned, a 275 is a bit too large for a front..but you can get various 225, 235, 245 and 255 in a 60 series 15", along with a few of the narrower sizes in a T/A in a 70 series from memory too (would have to check on that though)

You can look on Summit, tirerack, etc for the various sizes.