The Nexen brand is an "entry level" economical priced tire. It is certainly not a Michelin or Goodyear or Bridgestone in quality and longevity.
That said, it's a capable tire that fits your MDX; maybe it fits your budgetary needs at the moment.
RepairPal Certified shops can diagnose and repair your 2011 Acura MDX. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.