Seen a similar trailer in Washington Yesterday on the 512 merging on the 167 near Puyallup . Some Lawn / garden company towing it with a F150 . Bed may have been a tad longer , sides were looking like maybe 18" high . Loaded to the top and then some with 1/2" to maybe 2" river rock . Flippin thing was so heavy that the axles were bowed thus when he came down the hill on the 512 headed north and hit the corner at bottom , Outside edge of tread on the left side would just boil smoke . Next corner was to the left so the right side tires smoked .
All though it was a dual axle trailer , doubt they were 3500# axles and it did not look home made , but several companies around Northwest here make decent looking trailers , they just put 2000# axles on it and sell it cheaper .
Although I caught up to the truck initially , after getting a better look at what I was following , I decided it was better to back off a bit since I only had to go a couple of more miles up the 167 , Sure was funny though watching people get behind him , then bail to the other lane when the smoke started coming off the tires in the corners .
Fred H.