From an auto service place on a bmw that invoice looks like a typo!

I was 100% sure wife had a bearing going bad it turned out to be tire wear.

Classic bearing "UFO" "wub wub wub".

I put the car in the air was going to put in drive and use stethoscope but saw the uneven tread wear.

I also have had tires that would hum at certain speeds but usually slow.

The thing was with those, made a hum when coming to a stop sign that sounded *exactly* like a worn bearing.

Once i figured that out it was just funny to me and i might even hum along but it was tricky to determine when I actually had a bad bearing until i figured out the use a spare tire method.

Which btw can alao be used to confirm it's not the bearing.

If you have 255 tires and put on 235 spare it flips which races are loaded and the bearing hum will either disappear or get much worse.

It's how I found one of my bad bearings. I had no idea one was toast and i put on a set of 235s and instant horrible bearing. Was the 2nd e53 bearing i ended up changing.


–awr–

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)