See also:

Tire Rotation
Tires should be rotated every 7,500 miles (12,000 km). If you notice that tires are wearing unevenly between rotations, have the car checked by a Hyundai dealer so the cause may be corrected. A ...

Front Brake Disc/Pads, Calipers
Check the pads for excessive wear, discs for run out and wear, and calipers for fluid leakage. ...

Check spark plugs and ignition system
Inspect your spark plugs as described in section 7 and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way. ...