I believe in Germany its illegal to have unapproved tyres on any vehicle. Maybe someone who lives in Germany could confirm this. The fact the speed rating and load rating are the same doesn't mean that a non GT tyre is the same as a GT one. There is more too it than that. Something to do with carcass construction.
And that is my point! If it meets the bikes specs you should be able to run it. When we buy a car tire we buy, size, weight rating, speed rating. There are NO GT car tires,
So why on a bike? It is pure BS. Why was there no GT spec PR3? They were a stock tire from the factory.
As long as everyone is willing to pay your money to a mythical GT tire they will take it and keep price gouging you.
Caracas be damned, if it is my size, my speed rating, and my weight rating why are you building a tire that while marked that way is really not that rating?
How do you buy tires where you live? Size, weight, speed.
I do not think it is ethical to build a tire that is marked for the correct weight and speed to need anything else, if so, it should not be marked with those ratings or should be a option with no cost. I mean isn't it false advertising?
Say what you want it is just price fixing in the newest form.
And as long as the tire is speed and weight rated for you bike a insurance adjuster is not going to know about shady tire manufactures now forcing you with a gun to your head, and this GT hysteria, to pay a higher price for a product that should be true to it's rating that has been established by a governing tire compliance/specification for as long as I have been buying tires. About 45 years or so.
Vote with your wallet.