The company Tiresplus Conyersga offered to buy 3 and get 1 for free. I also decided that it was good offer and placed the order. Unfortunately, the company fooled me. They received the payment for 3 items and sent me only 3 pieces. But when I replied and told to send the 4th item, they started to ask for shipping costs and other fees. I was disappointed and wanted to share my experience with other people.