warped rotors , brake
Change the brake rotors
brake rotors out of round
When applying the brakes; if you feel the car jumping it's usually the brake rotors need "turned". And, all depending on the age of the rotors and how much your OLD brake pads have scraped them, you might need to buy new rotors. So, my answer is TURN or REPLACE brake rotors. <end>
It can be easy to change the brake rotors. Lift the car, remove the tire, brake shoe and rotor, put on the new rotor, replace the brake shoe, tire and lower the car.
You can find information on different brake rotors in a few places. You can find this information in car magazines, car manuals, car books, your mechanic and on car oriented websites.
Although I am not terribly knowledgeable regarding car mechanics, I have done some research. A brake rotor is what actually works to stop your car when you step on the brake. This takes place when the brake pads squeeze against the rotors when braking.
you most likely have warped brake rotors
pads
Changing brake rotors is pretty easy. One lifts the car, removes the tired, brake shoe and then the brake rotor. Next replace the brake rotor, put the brake shoe and tire back on the car and lower it back to the ground.
It is important for a person to learn how to change the brake rotors. A person needs to lift the car, remove the tire, brake shoe and rotor, put on the new rotor, replace the brake shoe tire and then lower the car.
This is not much information, but I'll give it a try. If the front brake rotors have too much run-out, "wider in some spots than others" then the rotors need refaced or replaced. If the problem is in the rear brakes, the brake drums are out-of-round and need resurfaced. If you feel the tremble in the brake pedal when you brake, then the problem is certainly in the brake system. ------------ He is correct...the rotors are probably warped. Replace the rotors if they are warped that bad. You can get them turned but they are going to be thinner than new rotors and whatever caused them to warp last time will happen faster. (heavy braking and riding your foot on the brake can cause the rotors to warp)