Summer tires
Hyundai specifies summer tires on some models to provide superior performance on dry roads. Summer tire performance is substantrally reduced in snow and ice.
Summer tires do not have the tire traction rating M+S (Mud and Snow) on the tire side wall. if you plan to operate your vehicle in snowy or icy conditions.
Hyundai recommends the use of snow tires or all season tires on all four wheels.
See also:
WORLD CLASS POWER-TO-WEIGHT RATIO
One of the program targets for the 2011 Sonata engineering team was
world-class power-to-weight ratio. Power-to-weight ratio pays dividends in both
performance and fuel economy.
Hyundai Sonata i ...
Mist Wiper Operation
If a single wipe is desired in mist, move the windshield wiper and washer control
lever up. ...
Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary.
An authorized HYUNDAI dealer should perform the operation. ...