I'm glad I'm not the only one towing a TT with a 4Runner!
I've been towing my 2014 Keystone Passport Express 252BH (4200lbs dry) on the back of my 2011 4Runner 2WD SR5 all over FLA for the past couple of months with a Blue Ox and a P3 break controller. It does GREAT! Wind, hard rain, horrible...