Fill the bed
When the wheelbase, size and horsepower stays about the same, and you cut the weight, a vehicle tends to want to scamper about in handling when road conditions are less than ideal, like when it rains or snows. -Ribald Conservative
So do like pickmup drivers always do, fill the bed with snow, hay bales, or (always a favorite) firewood.
Weight loss problem resolved.
§
I, car buffs. I aren't much of one, but.... Ahead of me at the stoplight yesterday, an ordinary-looking SUV branded Lincoln Mark X.
?!?
That is not my step-father's Lincoln!