How long before a u-joint should be replaced?

iqraceworks · 03-10-2020, 06:52 AM

My 07' 335i has around 100K miles on it. What's the normal life of the driveshaft u-joint and carrier bearing? Is it a good idea to replace them both, or are they good for a lot more miles? While I'm at it...what about the giubo (flex jpoint)?

I'm getting a little vibration at slower speeds under acceleration that I can now feel in the back of the car after I did my Whiteline rear subframe bushing install....I'm thinking that now without all of the flex of the stock bushings that were soaking up all of that vibration, I can start to feel it.

The u-joint, carrier bearing, and giubo are the only parts I can think that would cause the vibration I'm feeling. At highway speeds everything is smooth as can be....I can feel he vibration when accelerating around 15-25mph.

stewbets · 03-10-2020, 01:15 PM

Those symptoms are consistent with what I experienced when I had a bad carrier support bearing, but mine was also somehow installed upside down. I had some pretty intense vibration at low speed acceleration.

03-10-2020, 06:52 AM	#1
iqraceworks Brigadier General 2002 Rep 3,731 Posts Drives: 2007 335i Join Date: Aug 2019 Location: Missouri iTrader: (0)	How long before a u-joint should be replaced? My 07' 335i has around 100K miles on it. What's the normal life of the driveshaft u-joint and carrier bearing? Is it a good idea to replace them both, or are they good for a lot more miles? While I'm at it...what about the giubo (flex jpoint)? I'm getting a little vibration at slower speeds under acceleration that I can now feel in the back of the car after I did my Whiteline rear subframe bushing install....I'm thinking that now without all of the flex of the stock bushings that were soaking up all of that vibration, I can start to feel it. The u-joint, carrier bearing, and giubo are the only parts I can think that would cause the vibration I'm feeling. At highway speeds everything is smooth as can be....I can feel he vibration when accelerating around 15-25mph. __________________ 2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
	Appreciate 0 Tweet Quote

03-10-2020, 01:15 PM	#2
stewbets Captain 449 Rep 823 Posts Drives: '08 335xi, '04 545i Join Date: Sep 2019 Location: Dayton, OH iTrader: (0)	Those symptoms are consistent with what I experienced when I had a bad carrier support bearing, but mine was also somehow installed upside down. I had some pretty intense vibration at low speed acceleration.
	Appreciate 0 Quote