5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Ok so I own a 1998 528i. I'm hearing a mild to medium rumbling sound when I'm driving straight and turning left, however when I turn right the sound goes away. A friend of mine who's a mechanic said it sounds like my right front wheel bearing is going out.
Ok so I went online and was going to purchase bearings for both sides, what the hell if your going to do one side you might as well do both right? Any how when I went online all the sites sell wheel bearings for the rear, but I don't see anything for the front. Are they the same part???
The only thing I could find with regards to the front is the front "Wheel Hub Assembly".
If anyone has experience with this your info. would be much appreciated.
The front and rear wheel bearings are different. You were correct in finding that the front wheel bearing is in fact the hub, it is all 1 assembly. I am attaching a link to a diagram from http://realoem.com the wheel bearing is #5 in the picture (part # 31221093427) and also be sure that you replace the 4 bolts which hold it on, the bolts are listed below the bearing (#6 in the picture)
Also since they are not exactly cheap you may want to make sure that this sis not a tire noise before you start replacing bearings. Did you lift the front of the car and spin the wheels without the etires on the ground to confirm mthe noise? If not I would spend a few minutes doing that 1st. Also a real good tests is to spin the wheel and while it is turning grab the spring and feel to see if you can feel any roughness. If the bearing is fine it should feel nice and smooth, if the bearing is bad you wil feel the roughness of the bearing through the spring.
Hope this info helps, Good luck
I did the change 4 of them, the two hubs in front held by 4 bolts from the back where I replaced by new bolts from BMW (they come coated with thread locking compound see DT's remarks above). Difficulty? I say medium because one the bolts is hidden behind the strut nuckle (turned otherwise 1/2 job to 1 hour)
The back ones are NOT hubs and tend to live over the rear small shaft. I used a bearing puller to get them out, they did get separated though from the inner ring (they came off in 2 pieces/inner stuck to the shaft) but it was easier than the front ones. Once replaced the car will role way much better.
Coincidentally enough i was browsing www.bmwtips.com and came across this link written by DaveZ. It has a really nice DIY with great pictures and step by step instructions also part #s which we already covered but the pics of the parts are much much clearer than the parts diagram which i posted for you. Im sure this will help out a lot if you're gonna do his job yourself.
I'm about to take on this ordeal soon as well, mines a 325i conv.
nice advice dirty tool, the spring test is very easy, and your right, the driver side feels like the wheels not even spinning, yet the passenger side(same symptoms of the 1st thread) and the spring has a slight vibration...
all in all i phoned around and some suggested i replace the strut w/hub assembly.
seemed to take 15min. to remove at the junkyard, ill let ya know what happens going back in.
__________________ member of the <span style='colorrange'>3 pedals club</span>
member of the <span style='colorrange'>195,000+ mile club</span>
<span style='color:red'> its the ones who cant even drive slow that think i cant drive better fast..</span>
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.