Both tires are Sailun. It appears they were both new at the same time but the driver's side has really bad wear, with cupping. I don't think either tire has more than 12,000 miles but one is worn out and the other has minimal wear. I was going to replace the one worn tire with another Sailun to see if alignment helps before I replace all the tires with Goodyear or Michelin.
My question is about front tire replacement on 2014 Georgetown 351ds. One tire (driver's side) is in real bad shape. It is a Sailun 678 installed by the previous owner. Both front tires were apparently replaced at the same time. I know the first step is to have alignment checked since it appears that the tire is worn unevenly. After that should I just replace the one tire or do I need to replace both. The passenger side tire looks great and is barely worn.