Skip the auto shop - Our mechanics make house calls

Q: What is the truth about brake rotors/brake jobs?

asked by on

I'm hearing a lot of what sounds like baloney about the REQUIREMENT of replacing rotors every time the pads are changed. Can you give me some like the truth on this subject? Everyone I have spoken too gives the appearance of lying through their collective teeth.

My car has 55000 miles.
My car has an automatic transmission.

A: Hello. The rotors on most cars have a minim...

Hello. The rotors on most cars have a minimum thickness that they can be before they should be replaced. The minimum thickness is stamped into the rotor. The rotor can then be resurfaced until it gets too thin and should be replaced. Other reasons the rotor should be replaced are purple heat marks on the rotor and stress cracks. A rotor surface should be at least scuffed up if it is not being replaced or it is not warped. This non-directional scuffing will allow the new pads to seat in properly to the old rotor. The reason most mechanics recommend rotors with new pads is most vehicles will have too thin of rotors, warped rotors, heat or stress cracked rotors. The mechanic is liable to do the brake job correctly to prevent unsafe conditions. If you would like to have this done, a qualified mechanic can perform a brake pads and rotors repair (if necessary) at your home or office.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: New battery drained of power in one week

If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...

Q: Ac not blowing cold air what refrigerant do i use

R134A is the correct refrigerant to use. You'll need to have the A/C checked to see if you have a leak or another problem causing your power loss during acceleration. Another possibility is the AC compressor dragging against the belt...

Q: Changed my brake pads, now there is a grinding noise and the brake is spongy

The grinding noise you may be hearing may be a sign of worn out brake pads grinding on the brake rotors. When the brake pads wear down beyond a specific measurement, this kind of sound is common and may also...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.