Sure!
Falken does not list that tire model in that size on their web site (See Falken's tire size listing here: Falken Web Site), but Tire Rack does show a 285/65R18 SL 116T WILDPEAK A/T3W (See it here: WILDPEAK A/T3W on TireRack)
Since the RCTIP would be the same for a T Speed Rating and your S Speed Rating, and assuming your tire is SL and NOT XL:
The RCTIP for ISO-Metric 285/65R18 SL 116S tires on your LX570 is 30psi F/R.
If you take another look at your tire and find it is an XL tire, then the RCTIP would be 34psi F/R.
HTH
Would that be the same RCTIP on a 2016 LC on stock wheels? Definitely SL.