Jun 22 2020 · A semi-truck hooked up to an empty trailer weighs around 35000 pounds. The weight maximum for a semi-truck with a loaded trailer legally allowed in the United States is 80000 pounds. A semi-truck without a trailer weighs between 10000 and 25000 pounds depending on the size. How Much Does an 18-Wheeler Weigh?
May 29 2011 · EMPTY WEIGHT 24200 pounds. 27000 pounds is about normal on a Mack with a steel bed. So to answer your question you should be approx. 3000 pounds lighter with an aluminum bed. ampm wayne May 28 2011. ampm wayne May 28 2011.