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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki |
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#1
12-31-2012, 05:56 PM
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Front wheel spin
If you lift your car, put it on jack stands and try to spin the wheels:
a-they will spin freely, hardly any noise b-they will be hard to spin, make a grinding noise Mine do 'b' while driving and coming near a stop, I let it cruse until I have to brake, but i hear this grinding noise like if it's braking before i step on the brake pedal. Any ideas why? 
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#2
12-31-2012, 07:25 PM
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Maybe a stuck brake caliper?
Perhaps a brake line with a bit of trash in it, not allowing the pressure to release, or releasing slowly?
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#3
12-31-2012, 08:33 PM
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Could be gravel caught between the dustshield and back side of the rotor
__________________
ESS Tuning m60 version software m60 intake manifold a.f.e. c.a.i. 3" obx catback full powerflex urethane setup 545 ssk cdv delete m5 rear sway bar M5 chassis rods M5 3.15 lsd Bc-r coilovers w/ swift springs Akebono=suck ss braided brake lines coming soon: Jb lwfw 
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#4
12-31-2012, 08:34 PM
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How scored are your rotors?
__________________
ESS Tuning m60 version software m60 intake manifold a.f.e. c.a.i. 3" obx catback full powerflex urethane setup 545 ssk cdv delete m5 rear sway bar M5 chassis rods M5 3.15 lsd Bc-r coilovers w/ swift springs Akebono=suck ss braided brake lines coming soon: Jb lwfw
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#5
12-31-2012, 10:04 PM
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I would check all of your brake pads to see if any 1 has more wear than the others. It can be a stuck caliper as mentioned above, but because of the grinding noise, I definitely would say it is a rock stuck between the rotor and dust shields.
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#6
01-01-2013, 09:56 PM
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The rotors look normal. I didn't see any rocks stuck in there. So most likely its a stuck caliper (in both front wheels btw) or the rotors are warped
Sent from my SAMSUNG-SGH-I747 using Bimmer App
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#7
01-01-2013, 10:39 PM
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It could also be a bad wheel bearing. Check the brakes first though.
You could remove the brake pads and put the caliper back without any pads, and try spinning the wheel again. If the problem persists, then it is most likely a wheel bearing. If the problem went away, then it is most likely a stuck caliper or a brake line issue.
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#8
01-02-2013, 04:10 AM
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+1 bearings or caliper
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#9
01-02-2013, 09:06 AM
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Probably time to re-build the brake calipers.
Had the same problem, and also a shimmy at +/- 70 mph. New rubber seals + cleaning the piston calipers (which started to corrode at the outer part) fixed it. You might want to do rears as well, because if the front rubber boot for calipers are in poor shape, the rears are not far behind. And rears a PITA compared to the fronts.
__________________
Looking for a DIY? Parts? Check this out, it might be your ticket TMS underdrive pullies - Stewart WP - PSS9 - Beisan Vanos seals - Zimmerman cross-drilled & Akebono Euro - Deka 649 MF - 55w HID headlights - 35w HID foglights - Hualigan double din - ACS (rep) alu pedals - Euro central storage console - Breyton Magic Racing staggered wheels - M5 bumper - M5 steering wheel - Tint Stable: e39 M54, e53 N62 & Tribby
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#10
01-02-2013, 02:16 PM
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It has been almost 2 years since I did my 6 brake hoses and caliper rebuild, things run smoothly.
It is easier than people think. Here is the DIY again: DIY: 1998 BMW 528i Brake Hydraulic System Overhaul (Brake Hoses, Caliper Seals/Dust Boots) http://www.bimmerfest.com/forums/sho...d.php?t=538290 Also, while the caliper is out, you can spin the bearing by hand to check its condition.
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