Seen in Oklahoma City Oklahoma I-35 at about 65 mph to 70 mph. Wheels on this log splitter looked smaller than my wheelbarrow tires. About 3:30 pm in the afternoon so traffic was flowing pretty well. The Ford 4 x 4 did seem to be able to handle the load and tow it just fine.
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No Worries...... as long as the Not for Highway Use tires don't blow, or sleeve bushings don't seize.
Can see buddy driving along saying "Who's setting off fireworks back there ?".
Rgds, D.