Pop goes something back there!

[getty150]

Cold out!, dark out, leaving work, at the stop light I accelerate hard (uncommon for me) and I hear a "pop" from the rear...first I'm thinking it's the extra battery I've got floating in the back (precautionary)...
But no, now the X drives horribly above 30miles. Shaking, vibrating, steering doesn't shake....feels like the left (passenger) wheels is about to come off if I go any faster. Driver side seems fine. Could not get a visual, stopped to get gas no sign of fluid leakage of any sort.
Possibly could it be the rear drive train snapped a bolt and disconnected! Rear Differential?
X just turns 20 this year 225k on the clock.

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[EODguy]

Originally Posted by getty150

Cold out!, dark out, leaving work, at the stop light I accelerate hard (uncommon for me) and I hear a "pop" from the rear...first I'm thinking it's the extra battery I've got floating in the back (precautionary)...
But no, now the X drives horribly above 30miles. Shaking, vibrating, steering doesn't shake....feel like the left (passenger) wheels is about to come off if I go any faster. Driver side seems fine. Could not get a visual, stopped to get gas no sign of leakage of any sort.
Possibly could it be the rear drive train snapped a bolt and disconnected! Rear Differential?
X just turns 20 this year 225k on the clock.

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Guibo is a distinct possibility

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[getty150]

Originally Posted by EODguy

Guibo is a distinct possibility

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I would welcome the guibo I guess.
I replaced it back in 2014...not a hard job. But with most BMW jobs intensive.

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[X5chemist]

How old are the driveshafts? All four of mine are new. I have no beef to hit the pedal on some snow and ice. The center bearing is also new. Guibos too.

[andrewwynn]

I use this app:

https://apps.apple.com/app/id1089589547

To determine the exact frequency of the vibration

2225cm is the tire rolling circumference, a little math gets your from kph/mph to Hz

If you have 3.0 motor, 4.1x the wheel speed is the drive shaft speed.

I had a cv joint get stuck once and holy crap what a wobble.

Cv is 6:1 or 3:1 ratio of the wheel Hz.

Note that the speedometer reads 3mph (4.8 kph) high when taking your speed for the math.

[getty150]

Originally Posted by andrewwynn

I use this app:

https://apps.apple.com/app/id1089589547

To determine the exact frequency of the vibration

2225cm is the tire rolling circumference, a little math gets your from kph/mph to Hz

If you have 3.0 motor, 4.1x the wheel speed is the drive shaft speed.

I had a cv joint get stuck once and holy crap what a wobble.

Cv is 6:1 or 3:1 ratio of the wheel Hz.

Note that the speedometer reads 3mph (4.8 kph) high when taking your speed for the math.

Oh! I can tell this vibration is not normal nor is the drive. I took it to the neighborhood shop which usually serves me X well in the few cases...but this time they turned me down...new guy didn't know what a guibo was...I got no problem diy...just more money saved.

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[getty150]

Well, wrapped things up last night.
Job completed.
The problem...
•Center support bearing: toast
•Rear drive shaft: toast (welded U joint broke)

Good news...
•Guibo: Good condition (no cracks)
•Car jack: Purchased really good low profile floor jack from Harbor freight half price! Finally made the job way much easier. Great timing.

[Henn28]

Broken driveshaft!? Don’t read about that every day. It’s a shame the ujoint isn’t easily serviceable, like normal cars.

[getty150]

Originally Posted by Henn28

Broken driveshaft!? Don’t read about that every day. It’s a shame the ujoint isn’t easily serviceable, like normal cars.

The sound is horrible compared to the sweet whispers of the m54
I found a shop several summers ago who did the work on my 04 but I think he's retired by now.

[andrewwynn]

Giubo (joo boh)

(Not a criticism just information I found out when not long ago learning myself.)

Jaxk: HF has very decent jacks i have the 2 ton aluminum speed jack.

Great you got it fixed and almost better you were able to self propel home vs a tow.