BMW M135 - M135 shudders on full lock in reverse

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Mon 4 Dec 2017 12:57
BMW M135 - M135 shudders on full lock in reverse - ChrisGT

Hi,

My wife's BMW M135 shudders initially when she reverses on full lock. It is 2015 model with 30k miles, any suggestions at to what may be the cause?

Thanks in advance!

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Mon 4 Dec 2017 16:11
BMW M135 - M135 shudders on full lock in reverse - madf

Manual or auto?

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Mon 4 Dec 2017 16:25
BMW M135 - M135 shudders on full lock in reverse - ChrisGT
It’s an Auto.
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Tue 5 Dec 2017 09:10
BMW M135 - M135 shudders on full lock in reverse - Cris_on_the_gas

Sticking rear brake caliper or corrosion on rear disc.

Most services now don't include a brake service. As rear discs get very little exercise in everyday use. Good idea to remove pads and clean up calipers annually or 12k mileage.

Check rear discs for any corrosion or pitting. Minor stuff might just clean up with a firm brake application. Other wise might need new discs & pads.

Edited by Cris_on_the_gas on 05/12/2017 at 09:15

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Tue 5 Dec 2017 10:40
BMW M135 - M135 shudders on full lock in reverse - ChrisGT
Thanks Cris_on_the_gas for your advice!
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Tue 5 Dec 2017 15:10
BMW M135 - M135 shudders on full lock in reverse - galileo

If it doesn't judder with the front wheels straight it can't be the rear discs.

As the OP says it happens on full lock could the tyres be fouling something on wheel arch or suspension?

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Tue 5 Dec 2017 18:55
BMW M135 - M135 shudders on full lock in reverse - ChrisGT
Thanks galileo and will check..happens on full lock only.
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Tue 5 Dec 2017 22:22
BMW M135 - M135 shudders on full lock in reverse - sammy1

It is a well known fact that using the power steering on any car on full lock for extended period is detrimental to the Hydraulics or electric motor driving the power steering. Surprised no technician as mentioned this

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Wed 6 Dec 2017 09:20
BMW M135 - M135 shudders on full lock in reverse - ChrisGT

Thanks for the advice Sammy, full lock is only on for a few seconds at a time, once or twice a day so don't believe it will be a factor here.

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