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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Brake Rotor Specifications - how thin before out of spec?



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      09-16-2024, 02:02 PM   #1
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Brake Rotor Specifications - how thin before out of spec?

How thin can the OEM brake rotors be on an E9X 335i before they are out of spec? Thanks
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      09-16-2024, 04:24 PM   #2
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Basically replace them after they've worn 1.6mm from starting thickness. 348x30mm rotor = 30mm - 1.6mm = 28.4mm minimum thickness.

Last edited by The Nightman; 09-16-2024 at 04:29 PM..
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      09-16-2024, 08:13 PM   #3
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Some states also have laws on this subject, prohibiting shops from turning rotors if they will be thinner than a certain standard.
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