Same thing happened to me here in MD. They put load D instead of load E. When I realized it was almost a year later. All tires were replaced FREE OF CHARGE. This is the fault of the installer/shop. They are responsible to make sure the correct compatible equipment is placed on a vehicle unless it is supplied by yourself. You shouldn't had paid a dime.
Ex. If you go for an oil change, gear oil, trans fluid, etc. If the shop places oil or what ever liquid in, and it is the incorrect weight for the vehicle whom's fault would you say that is? It's still oil, and it most likely will work for some time right?
Installation of almost anything supplied by the installer/shop will most always be responsible for compatibility or substance.
Bottom line, if he had, had a blow out and damage of property or life, the responsibility would point and fall on the application not meeting specs. It is an installers responsibility to adhere to specifications when doing work. If you had an electrician wire your house, and it burned down because the wire was not of proper gauge; would you say that's ok it's my fault; I didn't check his wiring properly? Responsibility of applicaton is not the consumer when hiring a licensed professional or business to do the work. That is why they are licensed and have bonehead insurance for these things.
Replacing all tires for FREE would be the cheapest way out for Goodyear had there been an injury or worse.
