Mine has Dexter 5,000 lb axles with standard electric trailer brakes. It's sitting on a Leland Engineering chassis. I'm sure it is pretty top heavy but the wide stance makes it stable. I've only had to slam on the brakes once for a couple of goons who ran a stop sign. We missed them by no more than 10 ft. It seemed like 10 inches at the time. The trailer brakes grabbed like they're supposed to and saved the trip. Our 5th wheel weighs 10,400 lbs with a 1900 lbs pin weight. It's a Jayco 293RKS.