Excuses me for being late to this thread, lol, just checked the MTO (ministry transport Ontario) license designations for trailering non recreational vehicles. There is a 10,000lb limit even for D license for max towed vehicle. The D license allows for a larger tow vehicle, lol, no difference to the vehicle being towed. The thing is if you can prove the trailer and load is under the 10,000lb limit you are ok even if the trailer is rated for 14,000lbs. The problem though is the trailer itself will be heavier thereby reducing the payload. If the trailer is 1,000lbs heavier the total payload would drop by that weight.
I have a D licence and there is no advantage over G for non recreational towing, man wish I hadn't let my A go, lol.:thumbdown: