You will also note that there are many different types of pads. I would stick with a pad that is comparable to the OEM variety even though the brand name might not be the same. It does make a difference to the wear and stopping power and you don't want to lose anything compared to stock.
Most pad replacements are pretty simple but having said that please note that I personally have never done any Hyundai brakes before. Here is the general procedure:
1. With the car sitting on the ground loosen the lug nuts slightly.
2. Raise the car (or just the front or rear as necessary) to take the tires off the ground.
3. Remove the lug nuts and remove the
wheel.
4. Pry the calipers apart with something that will NOT damage the brake assembly or rotor. You may need to remove a retaining bolt or wire to do this. You don't need any more clearance than that of the width of the new pad. Sometimes it is easier to unbolt the caliper from the mounting bracket to work on it but don't do this unless necessary.
5. Slide the old pads out noting which direction they face.
6. Slide the new pads in. It may be necessary to force the calipers apart a bit more to allow the pads to slide in - one on each side of the rotor. The friction pad must face the rotor.
7. If you have removed the caliper from its mounting, replace it now.
8. While you turn the
wheel by grabbing the lugs have someone step on the brake inside the car to ensure the pads contact the rotor and will stop the
wheel. Do NOT step on the brake unless you are certain both pads are properly seated and in alignment with the rotor.
Assuming all is well so far re-mount the
wheel and bring the lug nuts to a finger tight position. You should not be able to feel any looseness by moving the tire/
wheel from side to side but the lug nuts should not be torqued at this time.
9. Repeat this procedure on all the other brake calipers.
10. When all the wheels have been serviced then tighten all the lug nuts IN THE PROPER SEQUENCE to the proper torque or something close to it.
11. Lower the car and re-check the lug nut torque on each
wheel.
12. After about 25 miles or so recheck the lug nut torque on each
wheel. Maintain the proper tightening sequence.
NOTE: Do not remove the cap on the brake reservoir during this procedure. It is possible to blow brake fluid all over the engine should you open the caliper too wide. I would recommend checking it before you begin (taking care not to get dirt or moisture inside the reservoir) and again after you finish the pad R&R ensuring it is topped off to the recommended level with the proper fluid type. Also, when testing your work move the vehicle slowly into an area where it will not hit anything should the brakes not operate properly. It might be necessary to pump them several times for proper operation.
Also, brake fluid is a disaster on paint so ensure it is not splashed on painted surfaces and wipe clean if so. Always ensure the reservoir is properly capped tightly as well as the bottle it came from. Do not mix fluid types.
If you somehow get dirt or moisture inside the reservoir take the vehicle to a shop that can vacuum out the old fluid and replace it. Do not try this unless you have the proper equipment and a vacuum for this purpose.