I just had to purchase some plank flooring. It came in boxes that were about six feet long, about 1.75 inches thick, and about 6 inches wide. Unbelievable how heavy each box was.
It got me thinking in a different way how heavy the loads must be on some of those trucks.
You reminded me of I use to walk by the loading dock where I worked. There were tractor trailers there all the time and I was always shocked to how bald the tires were on these trailers. Some flat spotting also. Scary to know these things are right beside you at 65 MPH or more on dry highways.
Heavy loads are your friend in snow and wind.
Empty trailers are...the opposite.