That's not correct. Toyota recommends the LT285/70R17 tires in combination with the TRD wheels on the STOCK LC200 - no rubbing whatsoever under ANY conditions. I've been running that combination for over six years (see my sig).
When I purchased my 2013 LC200 in 2012, the 17" TRD Rock Warrior wheels with the LT285/70R17 tires were a dealer option - it was even shown in the Land Cruiser brochure for the 2013's.
HTH
I’m running the same wheels and tires (and same color paint) and it WILL rub the mud flap IF you put on 1.25” spacers. I took them off after 1 day. No spacer means NO rubbing. A great look. Also did an OME 3” lift at the same time.