There have been alot of issues of the F550's getting stuck. We seemed to have solved this problem for the most part. We put a 2" suspension lift on the truck. We did not go with a higher suspension lift so we could keep the center of gravity to a minimum. We installed a 3" body lift on the cab. We increased the horse power slighlty, the truck is a diesel. We put 20" wheels and 40" Continental MPT 80 22 Ply tires. If the mud has a bottom to it, we can go through it. This may not work for everyone but it has worked well for us.