2025 BMW M3 Competition xDrive — weird vibration only between 62–70 mph

If it were in my driveway, two 2025 BMW M3s can feel identical and have different causes, so measure before you copy someone else's repair. That's the branch I'd chase this week. Take it or leave it — that's what I'd do. I'd rather look cautious in this thread than stuck later.

Intermittent stuff lies if you only catch it once. Move a coil or plug on the 2025 BMW M3 if it's cylinder-specific and see whether the code follows. You'll know quickly if you're on the wrong tree. On “weird vibration only between 62–70 mph,” that was the fork that mattered for me. If you share a photo of the worksheet, easier to sanity-check. Climate here is different, so treat that as a local data point. If it repeats twice more I'll book time.

I wouldn't throw parts yet. Capture voltage while the 2025 BMW M3 is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. This is from a 2025 BMW M3 in North Jersey with 96,000 miles. I'd want that in writing, not as a promise. This is me being the wet blanket on purpose.

I'd want a measurement, not a hunch. Capture voltage while the 2025 BMW M3 is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. If you share a photo of the worksheet, easier to sanity-check. I'd rather look cautious in this thread than stuck later.