I would think you would be exceeding your payload of your truck. Pulling our 27HFS with our Excursion was at its limit. Hitch weight is heavy on the 27HFS, mine is about 1300# with nothing in the garage. On the other hand with 1500# of motorcycles in the garage (Street Glide & Fatboy) the hitch weight goes way down, too far down, to about 700#. I had to fill the water tank just to add some hitch weight and load everything I could to the front, even then I barely got 1000# and the trailer was actually 200# over its gvwr. My Excursion was the V-10 and it pulled it fine, but was a bit squirrelly in the back end. Now with the new dually, its much more enjoyable. I couldn't imagine it with a half ton. I know the Tundra has plenty of ponies under the hood, my buddy has one, but your limiting factor will be the payload and if you still have car tires on, it wont be comfortable.
Jim & Evelyn
-2015 Ford F-350 XLT Dually
-2014 XLR Hyperlite 27HFS
-2012 Harley Davidson Street Glide (his)
-2004 Harley Davidson Fatboy (hers)