Duro is an American tire company formed in 1945. Now worldwide, they are in the bicycle market. With this much experience they definitely know how to make quality tires.
"Durobility is the guiding principle behind everything we do. We never Stop Improving on our existing products as well as expanding our product range to include the most up to date tread patterns and sizes. Duro's R&D department has a large array of engineering capabilities and we put our products through rigorous testing to ensure your safety. All of Duro's products are designed to provide maximum performance and superior handling while strictly adhering to worldwide standards and excellent quality."