I have the Harbor Freight adjustable height hitch and have pulled a '74 VW Beetle weighting roughly 1800-1900 pounds over 10,000 miles without any problem. Before I cut off about an inch, the hitch bottomed out a few times on the pavement going in and out of driveways and it suffered no damage. Last Fall I pulled a '68 Mustang on a steel deck car trailer which weighted about 4,000 pounds. It will be put to use again in June when we depart on about a 5,000 mile round trip to Washington State.
Jim & Debbie
2008 Holiday Rambler Vacationer XL 34PDD
1974 VW Beetle