As a new car owner I was nervous about purchasing parts for my tires without consulting a mechanic.Thanks to my knowledge gained in practice, i confidently chose Gorilla Automotive SP606 for my 100-millimeter application needs. The product is durable, easy to install, and has greatly improved the performance of my wheels. The only downside was the price, which is a bit high compared to other products in the market. nonetheless, it`s worth it for the quality and performance. Highly recommend..