That is a standard disclaimer for everything.. How many roll cages are actually sold as roll cages instead of grab bars??
Also consider the statement "DOT approved in most States"..
Since when do the states regulate the Federal Department of Transportation??
Let me put it like this. I can buy rim shells that have a DOT stamp on them. Then weld in my own center, drill some schrader valve holes or whatever to them. Meaning, if it is a modification to the shell that voids the DOT stamp then why sell the shells with the stamp at all??
DOT does not test rims, they sell the rim producer a stamp that the rim producer decides to put on their product or not.. The stamp says that they comply with the DOT standards. Nothing else.
Most of the people who produce beadlock rims do not want the hassle of testing their rims to verify DOT compliance. Plus, you knever know what Jow Blow is gonna do with the bolts holding on his outer rim. So, they add disclaimers to cover their butts..