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In 2018, the Hyundai Sonata comes with three different tire sizes depending on the trim level. The SE and ECO models are equipped with the smallest tires at P205/65R16 on 16-inch wheels. Moving up, the SEL, SEL+, Sport, and Sport+ trims feature P215/55R17 tires on 17-inch rims. The largest tires, P235/45R18 on 18-inch wheels, are found on the Sport 2.0T, Limited 2.0T, and Limited 2.0T+ versions. It is recommended to maintain tire pressure between 32 and 35 pounds per square inch for standard load tires, and about 10 pounds more for extra load tires. Keeping tire pressure towards the lower end under normal conditions is advised, but increasing it towards the upper limit when carrying a heavy load, which in the 2018 Sonata ranges from 1102 to 1247 pounds, is recommended.
In 2018, the standard wheel size on the Hyundai Sonata is 16 inches. The tire dimensions are 205/65R16, and it's recommended to maintain the tire pressure at 34 pounds per square inch (psi).
Is it possible to install 18-inch wheels on a Sonata Eco?