540 Front Calipers

[yuknfankees]

99 540i, think my front passenger brake caliper is "acting-up" and needs to be replaced...any idea how much from the dealership? Should I have them both replaced in the front at the same time?

[Dirty_Tool]

Not sure about price (expensive for sure) but I can tell you that caliper failure on BMW's is very rare. What exactly do you mean by "acting up?" Bad caliper is possible but id be suprised.

DT

[yuknfankees]

Originally posted by Dirty_Tool@Jul 18 2005, 10:29 PM
Not sure about price (expensive for sure) but I can tell you that caliper failure on BMW's is very rare. What exactly do you mean by "acting up?" Bad caliper is possible but id be suprised.

DT

[snapback]363404[/snapback]

For a few days I heard squeeking..then one morning while driving on the highway felt a "shimmy" then it got completley worse like the tire was going to come off, parked it for a few days, drove it to the dealership at city/highway pace, and it never really acted up again. Babied the brakes just in case, but it worked fine. There is NO way you could drive it when it got really "shakey"...thats why I dropped it off at the dealership wondering if its the caliper or wheel bearing or ???

[billB]

Originally posted by yuknfankees+Jul 18 2005, 11:39 PM--><div class='quotetop'>QUOTE(yuknfankees @ Jul 18 2005, 11:39 PM)</div><div class='quotemain'><!--QuoteBegin-Dirty_Tool@Jul 18 2005, 10:29 PM
Not sure about price (expensive for sure) but I can tell you that caliper failure on BMW's is very rare. What exactly do you mean by "acting up?" Bad caliper is possible but id be suprised.

DT

[snapback]363404[/snapback]

For a few days I heard squeeking..then one morning while driving on the highway felt a "shimmy" then it got completley worse like the tire was going to come off, parked it for a few days, drove it to the dealership at city/highway pace, and it never really acted up again. Babied the brakes just in case, but it worked fine. There is NO way you could drive it when it got really "shakey"...thats why I dropped it off at the dealership wondering if its the caliper or wheel bearing or ???

[snapback]363411[/snapback]

[/b][/quote]


Dirty Tools had pinned this exact problem...I am sure you will find an answer here....acting up as you described it sounds like front end problem (s) /balljoints etc...if it happens while applying brakes, consider rotors too.....here is the link
http://www.bimmerwerkz.com/forum/ind...howtopic=35686

good luck

[sp0rky]

Ive been in a car where the caliper just "spazzed" out and stuck closed. (e32) WOW.... what a ride that was. Shakes like you wouldn't even believe. The right front wheel was totally "frozen" the car wouldnt even roll down a hill if it wasn't running and the ebrake was off and it was in N. lol.

Just see if you can spin each wheel freely (if the problem didnt go away)

If it did go away, could be anything balljoint related or even a severely warped rotor.