I purchased the intergrated trailer brake controller and had it installed. the controller does not provide significant braking to the trailer. i have switched back to a after market controller until toyota comes up with a fix.
Bfgoodrich rugged terrain tires p275/55r20 are not safe. my tires began to show separation at tread line at 10,000miles taken to dealer and offered 65%, declined and went to tire store and offered 85%. i am monitoring tires currently.