Strange tire problem - can't find info

Got a new Towmax tire installed here in Warrior, Alabama. Put the (new) spare tire on the other side of the axle and made that old good tire the spare. Happy travels! Still feel confident with the Towmax tires, wearing well except for this obvious problem. I don't know my exact weight but I'm not even close to my max or the tires max as of the last weigh-in.

Thanks for the quick replies folks... In the end I decided I just didn't feel safe with the tread like that so stopped at closest Towmax dealer.