Tadei f
My advice would be to pass the problem to your tyre dealer. Get them to see the application for each of your sites , then recommend the correct tyre at the correct price for that job. When / if the Tyre fails prematurely, you then can go back to them for compensation / bigger discounts.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.