Hit very hard bumps on highway, need help

Drifter2090 · 06-22-2016, 01:21 PM

Driving on the highway last week I hit two really hard bumps and hit the bump stops, ever since then I've had a slight rub like sound from the front right-ish area under braking, it only happens sometimes and is getting more consistent overtime.

I already took the wheels off and checked to see if anything was damaged or loose, but didn't notice anything. Anyone have any idea what it could be?

Thanks

Fundguy1 · 06-22-2016, 01:29 PM

Maybe alignment or new a control arm bushing

Drifter2090 · 06-22-2016, 01:39 PM

Quote:

Originally Posted by Fundguy1

Maybe alignment or new a control arm bushing

It only happens randomly during braking for a second, its kind of like a rub sound but not really, super hard to describe it, hitting bumps everything sounds normal

Fundguy1 · 06-22-2016, 01:41 PM

Sounds like a busing then. Weight shift is it slopping forward until its seated again.

Drifter2090 · 06-22-2016, 08:19 PM

Quote:

Originally Posted by Fundguy1

Sounds like a busing then. Weight shift is it slopping forward until its seated again.

The suspension feels tight and fine, it's just under braking Wich is really weird, might take caliper apart and see

jwebb335xi · 06-28-2016, 09:51 PM

Quote:

Originally Posted by Drifter2090

The suspension feels tight and fine, it's just under braking Wich is really weird, might take caliper apart and see

Perhaps you could check the larger control arm bushing at the chassis side. I understand those flex most notably under braking when they're really worn. It may also make sense to check everything on that side for play, etc..

For what it's worth, I hit a pot hole bad enough to bend a rim and thought my suspension was OK. After replacing struts the next spring, however, I could not get the car aligned to spec. Changing the front lower control arm (and bushing) on that side got the car back into spec and it feels really good. I also noticed that my front upper strut mount was in terrible shape and replaced both sides when doing my struts. That side was making noise, but only over bumps -- not upon braking.

Good luck!

OneMoreAlex · 06-28-2016, 10:10 PM

control arm.

BlindWolf187 · 06-29-2016, 10:11 PM

Control arm. It's one of the more common parts to be damaged by an impact like that, so I'd say its worth looking at first.

Drifter2090 · 07-02-2016, 06:01 PM

Thanks guys, but it was actually my front right rotor making the sounds, it was grooved from the old pads, I never changed the rotor when is swiched pads

06-22-2016, 01:21 PM	#1
Drifter2090 Colonel 910 Rep 2,091 Posts Drives: E90 M3 \| E92 335i \| E90 335d Join Date: Jul 2015 Location: Ontario, Canada iTrader: (1)	Hit very hard bumps on highway, need help Driving on the highway last week I hit two really hard bumps and hit the bump stops, ever since then I've had a slight rub like sound from the front right-ish area under braking, it only happens sometimes and is getting more consistent overtime. I already took the wheels off and checked to see if anything was damaged or loose, but didn't notice anything. Anyone have any idea what it could be? Thanks __________________ MGM F82 M4 DCT / MPerformance / Swift / CSF / IND / Turner / BimmerWorld BSM F87 M2 6MT / Fabspeed / MPerformance / Turner / AutoID - SOLD JB-NB E92 M3 6MT / IND / RTD / Alpine / KW / ActiveAutowerke / 360Carbon - SOLD SS2-FR E90 M3 6MT / IND / AFE / ActiveAutowerke - SOLD AW-FR E90 M3 DCT / ACM / IND / AutoTecknic / K&N / H&R / Bilstein - SOLD
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06-22-2016, 01:29 PM	#2
Fundguy1 Major General 2033 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Maybe alignment or new a control arm bushing
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06-22-2016, 01:41 PM	#4
Fundguy1 Major General 2033 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Sounds like a busing then. Weight shift is it slopping forward until its seated again.
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06-28-2016, 10:10 PM	#7
OneMoreAlex Second Lieutenant 45 Rep 194 Posts Drives: 2012 e92 335i Join Date: Aug 2015 Location: Long Island, NY iTrader: (0)	control arm. __________________ 12' 335i \| CP-E CP \| MHD \| VRSF DP \| ALPINA B3 \|
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06-29-2016, 10:11 PM	#8
BlindWolf187 Private First Class 48 Rep 134 Posts Drives: 2008 E92 335xi 6MT Join Date: May 2016 Location: Denver, CO iTrader: (0)	Control arm. It's one of the more common parts to be damaged by an impact like that, so I'd say its worth looking at first. __________________ 2008 335xi 6MT Coupe - Monaco Blue on Saddle Brown \| fully optioned
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07-02-2016, 06:01 PM	#9
Drifter2090 Colonel 910 Rep 2,091 Posts Drives: E90 M3 \| E92 335i \| E90 335d Join Date: Jul 2015 Location: Ontario, Canada iTrader: (1)	Thanks guys, but it was actually my front right rotor making the sounds, it was grooved from the old pads, I never changed the rotor when is swiched pads __________________ MGM F82 M4 DCT / MPerformance / Swift / CSF / IND / Turner / BimmerWorld BSM F87 M2 6MT / Fabspeed / MPerformance / Turner / AutoID - SOLD JB-NB E92 M3 6MT / IND / RTD / Alpine / KW / ActiveAutowerke / 360Carbon - SOLD SS2-FR E90 M3 6MT / IND / AFE / ActiveAutowerke - SOLD AW-FR E90 M3 DCT / ACM / IND / AutoTecknic / K&N / H&R / Bilstein - SOLD
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