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NEW Centric Rotors Warped Outta Box?

On the advice of many here I purchased NEW Blank Centric front brake rotors (high carbon) for street use with Sport brakes. They're actually also labeled as Stop Tech Sports

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Old 01-03-2020, 02:18 PM   #1 (permalink)
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Default NEW Centric Rotors Warped Outta Box?

On the advice of many here I purchased NEW Blank Centric front brake rotors (high carbon) for street use with Sport brakes. They're actually also labeled as Stop Tech Sports on the box btw.

Wheels were torqued to spec off the ground and all else remained the same. Upon 1st drive I got steering wheel shimmy from 50 mph on up.

I then thoroughly cleaned the scale from the rotor to hub mating area and from the year old wheel to hub connection and again torqued the wheels off the ground. I still had steering wheel shimmy the from 50 mph and above.

The 90k mile OE rotors do not exhibit the same issue so I assume we can rule out suspension health.

Anyone else with a similier experience with Centrics or others? Other than replacing the rotors again, is there something I missed?
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Old 01-03-2020, 06:49 PM   #2 (permalink)
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Are you running stock wheels or aftermarket? If the latter, are the wheels fitted with hub rings? Also, did you torque the wheels in a star pattern?
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Old 01-04-2020, 02:43 AM   #3 (permalink)
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Try torque it on the ground. your sports brake pistons might not be centered and pulling your rotor away from the hub so you might not have the right torque. Torque on the ground, drive around and torque again after 10 miles.
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Old 01-04-2020, 06:12 AM   #4 (permalink)
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When I worked as a mechanic years ago. We used to come across rotors that wasn't true out of the box. Put them on a brake lathe to true them up. Some would take a little, others were a total lost.

You got 2 options. True them up or take them back and get another set.
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Old 01-04-2020, 07:01 AM   #5 (permalink)
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Originally Posted by Rusty View Post
When I worked as a mechanic years ago. We used to come across rotors that wasn't true out of the box. Put them on a brake lathe to true them up. Some would take a little, others were a total lost.

You got 2 options. True them up or take them back and get another set.
When i do brake jobs on customer's cars i always true them up.
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Old 01-04-2020, 07:09 AM   #6 (permalink)
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Quote:
Originally Posted by sx moneypit View Post
When i do brake jobs on customer's cars i always true them up.
I'm on my 3rd set of brake pads on my RacingBrake rotors. And I never had to put them on a brake lathe yet.
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Old 01-09-2020, 03:33 PM   #7 (permalink)
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Originally Posted by 40 to 332 View Post
Are you running stock wheels or aftermarket? If the latter, are the wheels fitted with hub rings? Also, did you torque the wheels in a star pattern?
Forgestar F15's with built in hubcentric rings. Yes proper pattern.

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Originally Posted by g96818 View Post
Try torque it on the ground. your sports brake pistons might not be centered and pulling your rotor away from the hub so you might not have the right torque. Torque on the ground, drive around and torque again after 10 miles.
The pads were reset to full piston in position in the rotors so they'd easily go over the new rotors; therefore, the rotor was also firmly against the clean hub. I'll try re-torque nonetheless.

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Originally Posted by Rusty View Post
When I worked as a mechanic years ago. We used to come across rotors that wasn't true out of the box. Put them on a brake lathe to true them up. Some would take a little, others were a total lost.

You got 2 options. True them up or take them back and get another set.
Figured on the same 2 options and shot a video over to Centric of the steering wheel shimmy. I'd like to be compensated for new rotors or the cost of having to their QC duties myself of course.
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