QuestionI have had problems with my rotors on my 2001 Santa Fe, when I brake, my steering wheel shakes, this has happened at least 6 times ( at least twice a year for the last few years ), the mechanic at Hyundai tells me that I need to ease into my braking, I've done that and still have problems, they keep having to resurface my rotors. What causes this to happen and how can I fix the problem?
AnswerTypically, the issue is overheating of the rotors. If the brake system isn't keeping the brakes partially applied, then the issue is with the conditions under which the car is driven. Unfortunately, we need brakes when we need them and there's not much we can do about it. Taking the normal measures to keep from using your brakes as much should help. This includes accelerating more slowly and keeping a significant following distance.
There can also be issues on cars that are driven infrequently with the rusting of the rotors on the areas not covered by the brake pads. The rusted surface has a different coefficient of friction than the nonrusted surface, causing a vibration when you brake. This is actually a frequent problem due to the humidity where I'm located.
Since you're having this degree of trouble, you might try using a different brand of rotor. And since it would appear that you're having the vehicle serviced at a Hyundai dealer, you might ask them if they'd consider using a name brand aftermarket rotor such as Bendix or Wagner. The potential benefit is that they may resist rust or overheating better. The drawback is that the dealer won't be able to provide you the same warranty coverage on aftermarket rotors, which is a significant drawback when you're paying for the repairs.
