Discount Tires Error ... Any Recourse ???

[thinkntravel]

In 2019, went to a Denver Discount Tires and asked them to replace the Goodyear OEM G tires on my 40' Cedar Creek 36CKTS ... about 18,000 lbs GVWR. They said they carried the tires ... installed them ... I paid the bill. Mind you, I don't know a "trailer tire" from a hot fudge sundae ... presumed they installed the right tires. Went back to that same store today to see if I should replace these tires. The Assistant Manager told me "truck tires" were installed on my rig ... not "trailer tires." Does this matter? What should I ask them to do about this mistake? Has this caused any damage to my 5er? Advice appreciated!