Front passenger wheel squeals at high speed

Isn't your car under warranty? Bring it to the dealer and let them fix it dude!

The disc brake on that side could be slightly out of adjustment. If it's still under warranty take it to the dealer had have them look at it.

Check the owner's manual as to the indications the brakes need replacing. Many cars have a system to let you know the pads are worn to their maximum limit. You do not mention how many miles you have on the car. Break pads wear quickly in city traffic and your style of driving and quality of the materials. Another possibility is the wheel bearing. In any case I would not delay in finding out the reason for this noise. It could lead to further damage. An 09 Hyundai could still be under warranty but check the details as to what is covered. Brakes may not be. Bearings should be. Sorry for your troubles and good luck.

dude, check torque on. Lug nuts, uneven torque out koran spec can cause imbalance on pressure on caliper to disc causing wear, wobble Android etc