Vibrations over 70 MPH

NYSLC93 · 04-08-2009, 12:17 PM

I have a set of 19" aftermarket CSL reps, and when the wheels were first installed, they were smooth as butter as fast as I could go.

Recently, I noticed that when I go over 70 mph, I get a slight vibration. I don't recall hitting any major potholes, but I did hit a one good size bump a while back. I took the wheels to Firestone and had them rebalanced and they said that the wheels were only slightly off - maybe an ounce.

Should I take them somewhere else to have the high speed balanced?

What else could it be??

Thanks!!

InlineSix · 04-08-2009, 12:21 PM

Most likely wasn't done correctly.

desmat · 04-08-2009, 02:48 PM

maybe the wheels aren't hubcentric since they are reps ? Double-check and get hubcentric rings for them if needed.

Also, make sure that the torque on the bolts is following OEM specs.

Hairy · 04-08-2009, 04:12 PM

More likely.... You've thrown a weight from one of the wheels. May have to get them rebalanced.

rawbert54 · 04-08-2009, 04:22 PM

to my experience, whenever there is vibration at a certain speed, it is a tire balance issue. does the vibration come from one corner of the car more than another? check to see if any weights were thrown from the rim. You may consider taking it in to have balanced.

MOCKBA · 04-08-2009, 05:04 PM

Or get bented, since were perfect at begining.

NYSLC93 · 04-09-2009, 07:36 AM

Quote:

Originally Posted by rawbert54

to my experience, whenever there is vibration at a certain speed, it is a tire balance issue. does the vibration come from one corner of the car more than another? check to see if any weights were thrown from the rim. You may consider taking it in to have balanced.

I have taken it in. Looks like I may have to take it in once more.

Kokanator135 · 04-10-2009, 11:16 PM

What's a good place to get rims rebalanced to a high speed like that reliably. I have that issue on my dad's car, but don't know who to go to besides the dealer to get this done properly. I don't want to be charged dealer labor rates for just rebalancing the rims.

imdanomite · 04-11-2009, 03:19 AM

BMW uses lug centric bolts, so a hub centric ring isn't necessary. it's more than likely to be the balance. i would take it somewhere that has a road-force balancing machine (like a Hunter GSP9700). those are what you want when it comes to speed specific vibrations.

04-08-2009, 12:17 PM	#1
NYSLC93 Private 4 Rep 60 Posts Drives: 2011 BMW 1M & 2017 4Runner Join Date: Apr 2009 Location: CT iTrader: (0)	Vibrations over 70 MPH I have a set of 19" aftermarket CSL reps, and when the wheels were first installed, they were smooth as butter as fast as I could go. Recently, I noticed that when I go over 70 mph, I get a slight vibration. I don't recall hitting any major potholes, but I did hit a one good size bump a while back. I took the wheels to Firestone and had them rebalanced and they said that the wheels were only slightly off - maybe an ounce. Should I take them somewhere else to have the high speed balanced? What else could it be?? Thanks!!
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04-08-2009, 12:21 PM	#2
InlineSix TwinTurbo Top Hat 22 Rep 252 Posts Drives: 2016 M235i Join Date: Feb 2009 Location: Miami Florida iTrader: (0)	Most likely wasn't done correctly. __________________ AW 2008 135i - Auto, Prem, with Sat Radio BMW CCA # 417107
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04-08-2009, 02:48 PM	#3
desmat First Lieutenant 37 Rep 311 Posts Drives: F31 M Sport Join Date: Mar 2008 Location: Montreal iTrader: (0) Garage List 2014 F31 M Sport [0.00]	maybe the wheels aren't hubcentric since they are reps ? Double-check and get hubcentric rings for them if needed. Also, make sure that the torque on the bolts is following OEM specs.
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04-08-2009, 04:12 PM	#4
Hairy Private First Class 4 Rep 120 Posts Drives: 2008 135i Black Join Date: Jun 2008 Location: Cincinnati iTrader: (1)	More likely.... You've thrown a weight from one of the wheels. May have to get them rebalanced.
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04-08-2009, 04:22 PM	#5
rawbert54 Private First Class 6 Rep 129 Posts Drives: sedona Reda 128i Join Date: Dec 2008 Location: fort lauderdale iTrader: (0)	to my experience, whenever there is vibration at a certain speed, it is a tire balance issue. does the vibration come from one corner of the car more than another? check to see if any weights were thrown from the rim. You may consider taking it in to have balanced.
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04-08-2009, 05:04 PM	#6
MOCKBA Captain 54 Rep 870 Posts Drives: 135 convertible Join Date: Nov 2006 Location: SFBA iTrader: (0)	Or get bented, since were perfect at begining. __________________ 535i/HUD Kamerton brings me true sound fidelity
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04-10-2009, 11:16 PM	#8
Kokanator135 Second Lieutenant 22 Rep 208 Posts Drives: seeking m240i Join Date: Mar 2008 Location: Edgewater, MD iTrader: (0)	What's a good place to get rims rebalanced to a high speed like that reliably. I have that issue on my dad's car, but don't know who to go to besides the dealer to get this done properly. I don't want to be charged dealer labor rates for just rebalancing the rims.
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04-11-2009, 03:19 AM	#9
imdanomite likes boobies ( o )( o ) 13 Rep 275 Posts Drives: 2009 BMW 135i Join Date: Jan 2009 Location: MD iTrader: (0)	BMW uses lug centric bolts, so a hub centric ring isn't necessary. it's more than likely to be the balance. i would take it somewhere that has a road-force balancing machine (like a Hunter GSP9700). those are what you want when it comes to speed specific vibrations.
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