Just wanted to give an update on this Harbor Freight trailer. I had 5 trips so far, averaging 400 miles per trip - so total of about 2000 miles.
I am pretty happy with the trailer. Driving at 65-70 continuously, and occasionally doing 75 - all of that with no issues.
I did install bearing buddy on each wheel hub, and pumped a good quality grease in there (green stuff), and periodically check for overheating - so far, just a bit warm.
I did install TPMS (actually on my car tires and trailer tires), so I don't need to guess what my tire pressure is - just a glance at the monitor and I know. And if the pressure goes too low, the monitor starts beeping.
I did use 3/4" marine grade plywood (solid piece 4' x 8'), which I later covered with rubber (glued rubber mats from home depot on top - the reason I did it I felt the exposed wood would be a bit too slippery when wet, in case I need to load/unload my bike in the rain), installed a few D-rings, and Harbor Freight bike chock (the solid black one, not the flimsy silver one).
To be on safe side, I tie down the handlebars using canyon dancer, and regular tie downs through the passenger footped holders, and the rear wheel to the trailer.
The poor thing went through many tough bumps which can be found around NYC Tri-State area.
I use a ramp also from HF (tri-fold, about 6ft long, and looks like three ladders stitched together). I covered all three ramps with 1/2" marine grade plywood, and then glued non-slippery paper which looks like rolls of sand paper. Again, I did this so the ramp is not slipperry even in the rain.
I have to use two pieces of wood about 4' long, 1' wide, 2" thick and placed part on the ramp and part on the ground so that I can always flat foot and not drop the bike. I also have to put similar (but shorter) two pieces of wood on the trailer under my feet when loading/unloading the bike so I can stand taller and can easier roll the bike on and off the chock. All four pieces of wood are covered with the rubber to have good traction in the wet, so I don't slip.
So, what do I carry on the trailer? The bike, the ramp, EZ-up canopy, the two larger pieces of wood. Alltogether close to 1000 lb.
The one inconvenience is that it takes some time to put it all together, tie all of it down, and tuck all the lose ends - around 40 min.
I pull this baby with my family car - '02 Dodge Intrepid. The weight of the trailer is noticeable, but not terribly bad.
I also installed a trailer jack. This makes it easy to park the trailer when not in use, but what turned out to be very convenient that I can load the bike and the stuff ahead of time (at that time the trailer needs to be hooked to the car). Once loaded and tied down, I can disconnect the trailer and just roll it in the garage for the night. So, the day I need to go, I only need to pack some personal stuff in the car, hook up the trailer and go. Still takes some time, but at least the trailer with the bike, ramp, EZ Up canopy on it is ready.
Oh, yeah, I had a sign made which read the following:
HONK ONCE IF YOU LOVE RIDING
HONK TWICE IF YOU LOVE TRACK DAYS
I got quite a few single and double honks. Well, until on one trip the mount for the sign broke, and the sign blew off - I discovered this only when I got home.
I guess that's all I can report.