Thanks! Just heard back from BFG that I should use 45/55 for "normal" driving with the KO2s on the 2014 LR4. As for towing they wouldn't recommend a specific PSI but stated the following:
"...your LT265/60R18/E (tire size) can hold 2,475lbs at 60 psi, 2,755lbs at 70 psi, and 3,000lbs at 80...