Iris Sefar 225/40R18 92W Summer tire (Acura – Explorer – 1930). Iris Sefar 225/40R18 92W Summer tire IRIS TYRES successfully passed an audit of the quality management system and production conformity. This audit allowed us to obtain a certification issued by a European state body. In addition to the “indoor tests”, our brand has an agreement with several foreign organizations that have many test benches and special tracks for outdoor tests: Wet gripp, Noise and Rouling resistance. Our tires have recently been tested by specialized organizations in Finland and Germany.