Caliper Rubbing on Rotor - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 11-24-2003, 11:27 AM
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Okay, on my '93 318is I started noticing a grinding noise coming from my back passenger-side rotor. Upon further inspection I saw where the caliper was pushing on the rotor. I jacked up the car and you could move the rotor back and forth without much effort. You could actually line it up where it didn't touch the caliper but as soon as you take it down off of the jacks it goes back into it's original position. What could be causing this? Is there something back there that I need to tighten? I know when this happens on the front end it's usually the ball joint....could this be so on the back side as well? Please help! ghead
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#2 (permalink) Old 11-24-2003, 11:31 AM
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your calipers could be seized. get it up, take off the wheel and take off the brake caliper, clean the slider pins and you should be ok, but if it still persists than your gonna need a new caliper.

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#3 (permalink) Old 11-24-2003, 11:35 AM
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Thanks for the fast reply.
The actual brake isn't grinding....just at the top where the rotor is angled it's hitting the caliper. Also, I think that the fact that the wheel can be shaken while jacked up is the root of the problem but I don't know how to fix it on the back.
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#4 (permalink) Old 11-24-2003, 11:59 AM
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could be your swaybar bushing or your balljoint

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#5 (permalink) Old 11-24-2003, 11:59 AM
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actually sorry you said rear caliper. hmmmm lemme think about it.

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#6 (permalink) Old 11-25-2003, 04:52 AM
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im a auto tech and i seen this before- if the car was in accident once so bad it bent the rim and hit the calipar back that the bridge contacts the rotor. if u always owned it you should know the deal.
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#7 (permalink) Old 11-25-2003, 05:59 AM
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Well, it has 18" racing wheels....sometimes it causes the tire to smack the inside of the wheel well. I suppose that could have knocked something loose or bent something....but what? I'm trying to figure it out so I can replace it.
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#8 (permalink) Old 11-25-2003, 09:32 AM
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I'm still attempting to figure out what youre trying to describe...

You say the caliper is scraping on the rotor... is it scraping on the front (side facing the front of the car) of the caliper? Are both of the guides screwed into the back of the caliper?

I say go buy a technical manual and look at how it's supposed to be, it sounds like it could come in handy for you for other things...

<span style='font-size:8pt;line-height:100%'>James
'91 318is</span>
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#9 (permalink) Old 11-25-2003, 10:19 AM
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take off your parking brake :lol:

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#10 (permalink) Old 11-25-2003, 03:56 PM
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I just said screw it and threw it in the shop They said it was bad bearings....I'll tell ya how it goes.
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#11 (permalink) Old 11-26-2003, 04:20 AM
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Dayumn...he said the whole hub assembly was shot and needed to be replaced. The only thing holding it on was the fact that it's a rear-wheel drive. WTH could have caused that? That's not something that just would happen with mileage I don't think. Sounds like I need to get some stiff suspension so the rim never gets close to the wheel well again.
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#12 (permalink) Old 11-26-2003, 07:18 AM
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where do you live cypher? im curious because just yesterday at my mechnics shop we had a e36 come in with the exact same problem and it happened to be the wheel bearing.

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#13 (permalink) Old 11-26-2003, 12:08 PM
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I live in Nashville....it's funny you said that... The place that I got the assembly from said that someone called in today for the same thing and that today was the first they've heard of it. Oh well, It'll get fixed. Basically you have two options...get the assembly or buy the spindle and bearings. To just replace it is the easiest but if it doesn't work I'll just have to get the seperate pieces.
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#14 (permalink) Old 11-29-2003, 06:28 AM
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Man, what an azzface mechanic. He told me when I put it in that it would be 80-135 for labor. Well, he called today and said it's ready...to the tune of $375. He's charging me an hour of labor for trying to get another axle out of the hub assembly HE told me to go get! I thought you don't pay for labor that doesn't work...I have no idea if I should pay this. I guess I will but I wonder if there is any recourse.
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#15 (permalink) Old 11-29-2003, 09:08 AM
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that is crappy dude. you should go to another mechanic

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