The Ecopia EP422 is an all-season tire; The Dueler H/L 422 Ecopia is an SUV, CUV and light truck tire with an all-season tread pattern.
Bridgestone says it will add 24 sizes to the Ecopia EP422 line by mid-year. That will increase the number of sizes to 29, broken out as follows: 15- to 18-inch sizes; 45- to 65-series aspect ratios. The Dueler H/L 422 Ecopia size lineup will increase from six to 19 sizes, ranging from 16 through 20 inches.
Bridgetone's NanoPro-Tech controls the interaction between polymer filler materials (such as carbon black and silica) and other rubber chemicals at the molecular level. The "Fuel Saver Sidewall" compounding lowers rolling resistance by returning more energy to the tire than a normal sidewall. The result is less heat generation.