Yes I know. If you have water depth swings (drought/flood) like many here they can get air in them and float up. Been there myself and with steel belted tires and bricks. Air will get in and flow to the lightest weighted side and float that side up. Any current will then move it around. We fixed by torching holes in the sidewall to let air escape.

Last edited by ewest; 02/25/16 01:48 PM.