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pete 
Newbie
Joined: 15-November-2003
Location: United Kingdom
Status: Offline
Points: 4
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 Topic: bmw 730 se 1990 judder
Posted: 15-November-2003 at 08:44 |
i have a 1990 730 se with a severe judder on braking around 55 mph,but sometimes it happens at same speed without braking. the car has just had an mot test and passed,no brake,steering or suspension problems. i am at loss as to problem now. would appreciate any help. many thanks pete.
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BOYBIMMERM3
Really Senior Member I
Joined: 29-October-2003
Location: United Kingdom
Status: Offline
Points: 265
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Posted: 15-November-2003 at 10:24 |
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hello, does this problem occur always or is it intermittant? you could possibly have a brake caliper sticking. after you experiance it happening next when you stop get out and check to see if one brake is getting much hotter than the others. just put you hand near the wheel dont touch it it could be very hot, you may even smell it getting hot. do you trust the mot station to do a strict test, could they have missed something?
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pete
Newbie
Joined: 15-November-2003
Location: United Kingdom
Status: Offline
Points: 4
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Posted: 15-November-2003 at 11:12 |
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thanks for your reply,it does it every time,thinking it might be warped disc or two.took it for a spin,heat at wheels about same both sides,and yes i do trust mot station,have known tester for years. thanks again . pete
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BOYBIMMERM3
Really Senior Member I
Joined: 29-October-2003
Location: United Kingdom
Status: Offline
Points: 265
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Posted: 15-November-2003 at 14:29 |
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you can get the brake disc run-out checked to see if the discs are warped before buying new ones. the maximum run-out is 0.07mm. use a dti gauge to check this. another idea maybe swop wheels front to rear incase wheel balance problem.
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Howard
Moderator Group
Did I say thaaaat?
Joined: 14-October-2002
Location: United Kingdom
Status: Offline
Points: 735
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Posted: 19-November-2003 at 00:22 |
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Check your gearbox mountings at the rear of the box. If the rubbers get soft or one of them is broken, judder is what you will get. The MOT will not usually pick them up as they hide behind a steel plate. Another cause could be a worn rubber joint in the prop shaft linkage.
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pete
Newbie
Joined: 15-November-2003
Location: United Kingdom
Status: Offline
Points: 4
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Posted: 19-November-2003 at 04:17 |
thanks for the info howard,i will check your ideas out today,and let you know the results.
pete
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pete
Newbie
Joined: 15-November-2003
Location: United Kingdom
Status: Offline
Points: 4
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Posted: 19-November-2003 at 17:23 |
thanks to those who posted replies to my judder problem,it was very warped discs. the car is fine now. 
again, many thanks
pete
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bmw 730 se 1990 judder