I just replaced my Carlisle's, as well. Since no one makes a 14" LT, I went to the 14" Kumho's. Picked them up on Memorial Day Weekend, on the way through Conneticut, so I saved the shipping costs by driving 10 miles out of the way. Unfortunately, that meant that I had to pay CT sales tax, but I still saved money....
Two are on, two to go (this weekend, I hope!), as I'm doing one side at a time, and rebuilding the poorly installed wheel well liners as I go. But that's documented in another thread....
BTW - My Carlisles were dated 3607 (TT delivered new in March '08), and the new Kumho's 3511.
2014 RAM 2500 Laramie 4x4 Quad Cab w/Cummins Turbo Diesel, 2009 Rockwood 2607, and 3 'yaks!
300W of Suntech Solar, a Rogue MPT-3024 Controller, and a Xantrex PW2000 Inverter