Tire Guard is a combination of a limited road service and tire warranty.? It covers roadside tire repairs as well as the actual cost of repair/replacement of the tire itself.? As to whether it is a good deal, I guess it is a matter of personal needs/preference and of course the cost of the coverage.? If you already have an RV road service (e.g. Coach-Net) that covers all roadside emergencies, then you don't need Tire Guard for that purpose (Tire Guard covers only tire related problems).? If you are worried about the potential cost of tire failures and perhaps the frequency of such failures, then maybe the tire coverage is an OK thing.
Personally, I omitted that sort of coverage.