Should I Replace All 4 Rotors?

You do not need to replace all 4 rotors at the same time, but it is recommended to replace the rotors and pads as a set for each axle front or back at the same time. If the front brakes need to be replaced but the rear brakes are not worn out yet, then you do not need to replace the rear brakes.

Is it okay to replace only one rotor?

There is no problem at all replacing a single rotor. They are sold individually, and can be replaced as such. It is especially important to bed in the pads if you do this, but once the pads conform to the rotors, the stopping power on each side will be the same. There can be major problems replacing pads individually.

How much does it cost to replace all 4 rotors?

How much does it cost to replace the brake pads and rotors? Rotors cost between $30 and $75 each. Labor to replace rotors and pads is around $150 to $200 per axle. Brake pads and rotors come out to around $250 to $500 per axle.