Thunk through steering wheel

[Denso]

I am getting a thunk/thud through the steering wheel when hitting small bumps at low speeds, It is not every bump but a small percentage anyone else getting this ? Car is off to the dealer next week for investigation i will update for info what they discover.

[bayer]

Not on the 1M, but on previous cars for sure. It seemed it was always something suspension related in the front, wheel bearing, bushing, etc.

Hope its resolved quick.

[SIM1er]

I get this, typically when going over a small bump with the wheels turned

[MDORPHN]

After 8,800 miles, I found that the bolt fastening my right side upper control arm had loosened. Tightened it up and the real annoying noise/vibration I had been experiencing over small bumps was gone.

Neil

[Denso]

Originally Posted by SIM1er

I get this, typically when going over a small bump with the wheels turned

Thats it, exactly the same issue. Have you spoke with the dealer at all ? I have had a new steering rack fitted just before Christmas and it has made no difference at all ?

[as7920]

I get this. Had it since 6 miles.

[SIM1er]

Originally Posted by Denso

Thats it, exactly the same issue. Have you spoke with the dealer at all ? I have had a new steering rack fitted just before Christmas and it has made no difference at all ?

No, not bothered taking it to be looked at yet.

[Zuzu]

I get it also when turning and hitting a bump..

[Denso]

Seems like a lot of us have the same issue, time for a phone call to BMW i think

[MDORPHN]

If you're willing to get your hands just a bit dirty, I'd strongly suggest you do a simple bolt check.

Again, in my case it was a single bolt that needed about 1/2 - 3/4 turn and all is now well.

Neil

[Denso]

Originally Posted by MDORPHN

If you're willing to get your hands just a bit dirty, I'd strongly suggest you do a simple bolt check.

Again, in my case it was a single bolt that needed about 1/2 - 3/4 turn and all is now well.

Neil

Thanks, i will try this before i make the call

[Pete H]

I've got this noise too, just seems to happen if one wheel drops into a pot hole with some lock on. Can be felt through the steering wheel as well. Is it worth a mention to the dealer or is the concensus it's normal, big tyres, stiff springs etc ?

I wondered if tightening up the bolt for the control arm would sort it as MDORPHN describes ?

Cheers

Pete.

[Denso]

Originally Posted by Pete H

I've got this noise too, just seems to happen if one wheel drops into a pot hole with some lock on. Can be felt through the steering wheel as well. Is it worth a mention to the dealer or is the concensus it's normal, big tyres, stiff springs etc ?

I wondered if tightening up the bolt for the control arm would sort it as MDORPHN describes ?

Cheers

Pete.

Bmw technical are involved and are comming to see it next month.

[Pete H]

Thanks Denso,

Did you try tightening the control arm? Really interested to find out what BMW technical say.

Pete

[Denso]

The Technical Dept has completed a series of tests on 2 BMW 1 Series M Coupe models.

The front suspension and steering was examined and whilst there was no evidence of a component defect, the resonance that has been described

in our technical communication to BMW regarding your vehicle was also found to be present on both vehicles during test.

Due to the fact this vehicle is a motor sport model with a completely different suspension to that of a standard coupe,

no further repair action has been currently recommended as the vehicle appears to function within the criteria of the model range.

We shall however update you should we be advised of any further enhancements to you car.

[Artemis]

Originally Posted by Denso

Due to the fact this vehicle is a motor sport model with a completely different suspension to that of a standard coupe, no further repair action has been currently recommended as the vehicle appears to function within the criteria of the model range.

Excerpt of page 27 of the "BMW 1M Supplementary Owner's Manual 2011 (USA)" (available in the manuals sticky: http://www.1addicts.com/forums/showp...82&postcount=1):

"Driving on a race track
BMW recommends the following measures before driving on a race track:
- Participate in a BMW driver training course
- Have the vehicle checked by your BMW center
Operation on race tracks results in a higher rate of wear. The BMW 1-Series M Coupe is not designed for use in competitive motor sports. This wear is not covered by the vehicle warranty.
The series brake pads and wear indicator are not designed for operation on a race track. Your BMW center will be glad to advise you."