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FWIW ...<br>
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<a class="moz-txt-link-freetext" href="https://www.centricparts.com/media/technical_bulletins_docs/Centric_and_APC_Technical_Whitepaper_B1-Warped-Brake-Disc-8-2018_1.pdf">https://www.centricparts.com/media/technical_bulletins_docs/Centric_and_APC_Technical_Whitepaper_B1-Warped-Brake-Disc-8-2018_1.pdf</a><br>
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<div class="moz-cite-prefix">On 9/27/2025 7:43 AM, john niolon
wrote:<br>
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<blockquote type="cite"
cite="mid:1UkSvWeRAH.3PSHGCDX72r@johns-desktop">
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<div><font face="Segoe UI">well I carry tools in my suburban (shop
content)</font></div>
<div> </div>
<div><font face="Segoe UI">Mt problem is a 2008 suburban that has
always had a brake shudder (warped rotor) problem since I've
had it... every year it seems it's </font></div>
<div><font face="Segoe UI">replace rotor time.</font></div>
<div> </div>
<div><font face="Segoe UI">This year I know I had two never
turned rotors. I put a dial indicator on rotors and saw no
more than .002 runout.. so I decided to just get</font></div>
<div><font face="Segoe UI">them turned just to see what difference
it would make. </font></div>
<div> </div>
<div><font face="Segoe UI">Took them to a reputable shop that
turned them and reinstalled. First drive was thru the
neighborhood with no shudder.</font></div>
<div><font face="Segoe UI">Second drive was a ten mile trip on
freeway... when exiting freeway I felt the shudder and it
seemed worse than before I turned</font></div>
<div><font face="Segoe UI">the rotors...</font></div>
<div> </div>
<div><font face="Segoe UI">I'm going to tear them back down next
week to check everything but wondering if there is something
else I need to check or be</font></div>
<div><font face="Segoe UI">concerned about. I did try stopping
with just the parking brake with no shudder so that eliminates
the rear rotors causing the</font></div>
<div><font face="Segoe UI">problem. Pads look nearly new and fit
in the caliper nicely... Caliper pistons are retracting as the
should (pads are not bound to rotor when</font></div>
<div><font face="Segoe UI">removing wheels. Lines look ok from the
outside. Caliper pins are smooth and well lubricated.</font></div>
<div> </div>
<div><font face="Segoe UI">any ideas/suggestions/true life
experiences/fantastic tales ???</font></div>
<div><font face="Segoe UI">john</font></div>
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