C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Brake Rotor Identification 12"

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Old Jun 22, 2014 | 12:56 PM
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Default Brake Rotor Identification 12"

I have 7 rotors from when I installed my J55 13" brake system which I would like to sell. Some used, some new. I have lost track of how to identify the front from the rears. How can I tell which rotors go where, is there an easy way or some measurement.
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Old Jun 22, 2014 | 01:09 PM
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Here ya go....Hope this helps. These are J55 front 12" rears

Rear



Front




Last edited by FASTAZU; Jun 22, 2014 at 01:22 PM.
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Old Jun 22, 2014 | 01:48 PM
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Fronts are .79 thick for new and should be tagged min: .724.

Rears measure nearly the same for thickness, the fronts are 2.20" (55.8 mm) tall, the rears are 1.97" (49.9 mm) tall. That could vary a little (very little) brand to brand I'd think.

Stacked side by side I doubt you should have any trouble distinguishing between the product.

Last edited by WVZR-1; Jun 22, 2014 at 01:50 PM.
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Old Jun 22, 2014 | 06:02 PM
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Originally Posted by WVZR-1
Fronts are .79 thick for new and should be tagged min: .724.

Rears measure nearly the same for thickness, the fronts are 2.20" (55.8 mm) tall, the rears are 1.97" (49.9 mm) tall. That could vary a little (very little) brand to brand I'd think.

Stacked side by side I doubt you should have any trouble distinguishing between the product.
Excellent, right on, just the info I needed. So I have 5 fronts and 2 rears which basically correlates to the work I did back in 06 or so. I was kind of heading in that direction but just did not follow thru. Asking was better than guessing, more reliable data and quicker. Going to see if I can sell it all.
Thanks as usual.

And thanks to We Gone also but if you miss-understood, they were all 12" rotors. The 13" would not have been a problem as they only go on the front.
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