How to find minimum brake rotor thickness with no documentation
Aftermarket and rare performance brake rotors often lack online documentation, and dealerships frequently cannot provide the specs. You can often solve this by checking the outer edge of the rotor hat, where manufacturers sometimes stamp the minimum thickness directly onto the metal.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
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- 1Calling multiple dealershipsDid this help you?
- 2Searching online documentationDid this help you?
- 3Inspecting the rotor hat edge with a wire brush to find stamped specificationsDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I've tried calling 3 dealers with no avail, hoping someone here can help me out.”source ↗
“I can't find it anywhere and the local dealers (as usual) are completely useless.”source ↗
“The internet searching hasn't been terribly helpful, either. Seems like this was a pretty low take-rate option, so details surrounding it are proving difficult to find.”source ↗
“I had similar problem with a different GM performance brake package and ended up finding the min thickness stamped right on the rotor hat edge”source ↗
Where this came up
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