I manage our family business. We have a car, truck and trailer service shop in Long Island, NY.
I agree with pretty much every post here. When I purchase a new vehicle, or almost any vehicle I buy I always install new tires or a brand tire that I know is great. For example, I recently purchased an Infiniti Q50 that comes with run-flat tires from the factory. They are $400 a piece, ride extremely stiff and somewhat noisy (not saying all run-flats). I swapped them out for Continental DWS, the car drives completely different and still handles awesome. I also have a 14' Grand Cherokee that I cured a constant vibration with changing tires.. on and on. Other then the fact that the tires must cost the manufacturers less money to use inexpensive tires, I really dont understand it. A different tire can completely change the driving characteristics of a vehicle.
We have customers with trailers that install car tires then they wear out or blow out prematurely. Tractor trailer tires are different then the tires on the rig. Sidewalls are stiffer on all trailer tires.
I also agree that its personal preference.
I am going to email our main tire warehouse and try to get some good information for everyone here.