Thanks for the suggestion, I'll try that. I also contacted a dealership in Florida, at the suggestion of Roadtrek International and found that I can order the whole unit but that Roadtrek apparently is not making a Lt 225/75 R16 ring and cover for the Continental Kit anymore. They only make a (I think it was) a 245 size assembly. My Roadtrek still retains the 225 size and I'm told that the 235/245 could not be made to fit
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