Fixed, thanks!
Remember, brakes on a vehicle are only designed to stop the weight of the GVWR, never the GCWR. 1,500 lbs would be 30% of our GVWR. With two adults, two suitcases and the dogs we're probably using 550 of my 970 lbs. Pulling an unbraked trailer of 1,500 lbs would be asking our brakes to stop roughly 18% more than they were designed and tested for.
970 minus 550 = 420 lbs before hitting GVWR.
GVWR is 4,850. 4,850 minus 420 = 4,430 lbs
4,430 + 1,500 lb trailer = 5,930
4,850 GVWR divided by 5,930 combined weight = 82%
Could they? Certainly. Would it take a longer distance? Certainly, especially if the brakes are already worn to a good degree. How much? No clue. Would the brakes be overtaxed? The way things are built so close to limits nowadays, probably. If I do that often am I going to have to pay for brake jobs more often? Yup, unless I dump it on someone else first .