Maybe I can help. If you are running a tandem and add a steer axle, you have capacity of 12 plus 12 plus 34, for a total of 58,000lbs (jes to be safe). If your teuck weighs 24,000 empty you could (CARRY) 34,000lbs legal. Butttt..... there are bridge laws that will limit you to 54,000lbs as a...