nacelle and bottom tower trailers
The trailer in the foreground is a nacelle trailer, it weighs so much empty that the rear tag axle has to remain on the trailer, it is a 10 foot wide, it weighs around 125,000 to 150,000, as near as I can guess. The nacelle weighs 80 tons or 160,000. The combined weight was 280 to 290,000.
The trailer in the background is a unit that hauls the bottom section, it self offloads the tube.. weight unknown. the rear part is pulled backwards after the unloading, which makes it a double combo affair