I have roadside assistance with AAA plus RV for the piece of mind when towing (and because it covers my motorcycle, too). I've spoke with AAA and asked and they do not repair tires but will change the tire if you have a serviceable spare or will tow up to 100 miles ($3.75 per mile over 100 miles).
I always carry a spare for the trailer and feel better knowing that I have the tire, jack, tools and air compressor to fix as needed.
DW, 3 Kids and our Goldens
2012 Shamrock 233S
2008 Toyota Sequoia 5.7L 4WD