Things to consider when buying a trailer. I put 20k+ a year on my trailer's. Some suggestions. Buy a trailer rated for way more than you intend to carry, rating is based on the axles under the trailer not the trailers frame design. Carry @ least one spare. Get radial tires, I have broken a lot of belts in trailer tires. E rated tires are a must, think pot holes and curbs. Larger 10 ply tires are run @ higher psi and flex less. Flex= heat. Heat kills tires. Always balance your trailer tires, many tire shops don't balance a trailer tire unless you ask. Best spare mounts are the ones that include bearings and a hub. Taller the tire the slower the bearing speed and smoother the trailer will ride. Self adjusting brakes are worth every penny more, especially on a low slung trailer. Ramps are critical, get ones that aren't going to bend. You can't have enough tie down points on trailers. Some car trailers have only a few in deck tie down points. I prefer full length side rails for the multitude of lashing options they offer. Straps, spend up and get very HD ones. We have had stupid people pull out in front of us while towing 60 mph. The truck and trailer stopped but the tail straps failed and the disco on the trailer ended up against the head board/rail. I prefer the safety factor a trailer front rail/ head board affords. Buy the best trailer you can afford, cheap trailers dont hold up, meaning they flex, welds crack, bearings fail etc. Don't rationalize a cheap trailer with thoughts like I'll only use it 2k a year etc.
If anyone is looking, my 2019 triple axle 36 ft deck, deck over axle gooseneck trailer rated @ 24k is for sale.