How often to turn rotors???
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Instructor
Joined: Mar 2002
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From: VIDOR TEXAS
How often to turn rotors???
I just had my GM factory rotors turned 6000 miles ago and now they are shimming when braking from high speeds. I know they(GM rotors) are bad about warping, but does this seem right. :confused:
Pro
Joined: May 2001
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Re: How often to turn rotors??? (RDRH8R)
1. Turning rotors on a C5 is a waste of money; get new ones for about $10 more per corner ($55 from GMPartsDirect.com). Thinner rotors don't hold up as well or for as long, and don't absorb as much heat. (Bad, since the rotor is the heatsink).
2. If you absolutely, positively MUST turn the rotors, don't do it more than once on a given rotor. See #1.
If they're warping after 6k, it's probably something about your driving style. Say, running the hell out of the brakes and then using the e-brake.
2. If you absolutely, positively MUST turn the rotors, don't do it more than once on a given rotor. See #1.
If they're warping after 6k, it's probably something about your driving style. Say, running the hell out of the brakes and then using the e-brake.
Tech Contributor
Joined: Oct 1999
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From: Charlotte, NC (formerly Endicott, NY)
Re: How often to turn rotors??? (David Lively)
I firmly believe you should not turn a rotor on any car ever. If it needs to be turned due to damage (scoring, etc) then replace it. I don't see that C5 rotors are any more suscptible to warping than any other make performance vehicle. The thicker the rotors the more likely they will warp, however, I am on my third set of rotors in 21K miles and have yet to warp one. As you may surmise I do use my brakes very hard.
Bill
Bill
Safety Car
Joined: Sep 2001
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From: Wilmington NC
Re: How often to turn rotors??? (RDRH8R)
I just had my GM factory rotors turned 6000 miles ago and now they are shimming when braking from high speeds. I know they(GM rotors) are bad about warping, but does this seem right. :confused:
Also I think you need to find out why they are warping.. I beat the crap out of GM rotors and never had 1 warp. Any chance somebody air wrenched your wheels on? A $30.00 torque wrench can save you a lot of grief. :) :)
Pro
Joined: May 2001
Posts: 553
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Re: How often to turn rotors??? (C5inNY)
The thicker the rotors the more likely they will warp,
Incidentally, I go through 2 sets of rotors a year (track use) due to cracking w/race pads, and I haven't had a warped rotor yet.
Incorrect lug torque is probably the bad guy here. 100# per lug, tightened with a torque wrench in a star pattern, taken off the same way (sans torque wrench). Your brakes will love you for it.
