BMW M3 E92 S65 V8 Main Bearing Failure — Rod Knock
The S65 V8 in E92 M3 develops main and rod bearing wear from high-RPM use, oil starvation on track or extended oil change intervals. A knocking noise from the lower engine confirms bearing failure. Running the engine further causes catastrophic damage. Full bearing replacement with oil pump inspection costs £2,000-4,000. Track-use M3s should have oil changed every 4,000 miles.
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