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Question

I have a F350. After the rotors are turned should there be any scoreing or irregularities on the surface of the rotors? If there is scoreing or any marks on the rotors after turning would that effect my brakeing ability and the wear of the new break pads?

Submitted: 30 days and 9 hours ago.
Category: Car
Value: $23
Status: CLOSED
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Posted by Dale Stockstill 30 days and 8 hours ago.

Answer

Hello,

My name is Dale and I will try to help you.

 

Generally speaking a shop that turns rotors is held to a mimimum thickness they can turn the rotors down. This with is clearly marked on each rotor by federal law. If they turned them down to the minimum and there is still a bit of scouring it usually will,not cause any problem. It could wear the brake pads a little bit fastert depending on how deep the scores are. but the alternative is to replace the rotor with a new one, which is usually quite expensive unless you buy the cheap foreign made rotors that are made of soft metal, Then the problem is that the soft rotors tend to wear about as fast as a good quality brake pads.

 

So those are really your options. As far a safety is concerned, as long as the rotors were not turned below the minimum they are just as safe a a brand new one.

 

Hope this helps. If you need more guidance, just let me know.

 

Sincerely,

Dale

30 days and 8 hours ago.

Reply

So, the rotor can be resurfaced removeing all scoreing to the minimum thickness of the federal safty standard stamped on the rotor? Would a smoooth surface give me better brakeing ability?

Accepted Answer

Yes it would increase the surface area that the pad can apply but will not really make much difference unless there is a lot of scoring. The biggest reason that we turn rotors and/or drums is to get them straight so the pedal does not pulsate and to remove the glazing on the surface. The glazing will definately lessen the braking ability and increase squeal noise on new pads.

 

Hope this clarifies it a bit more for you.

 

Sincerely,

Dale

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Expert: Dale Stockstill
Pos. Feedback: 100.0 %
Accepts: 
Answered: 10/24/2009

Automotive Diagnostic Technician

40 years of Automotive Technical Knowledge, Teacher, Diagnostic Specialist

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