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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 01-23-2020, 09:30 AM
mulsanne mulsanne is offline
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E64 engine vibrations felt through steering wheel

I just purchased a 2008 650i convertible, and the the more I drive it the more I like it. But I have noticed a couple of things that are a bit disappointing:

1. I noticed that engine vibrations can sometimes be felt in the steering wheel seat at idle. Is this normal?

2. The chassis is not as rigid as I thought it would be. When hitting bumps just right with the right or left front wheel I sense the chassis twisting at the A pillar. Is this to be expected?

Thanks.
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Old 01-23-2020, 10:12 AM
FredoinSF FredoinSF is offline
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Originally Posted by mulsanne View Post
I just purchased a 2008 650i convertible, and the the more I drive it the more I like it. But I have noticed a couple of things that are a bit disappointing:

1. I noticed that engine vibrations can sometimes be felt in the steering wheel seat at idle. Is this normal?

2. The chassis is not as rigid as I thought it would be. When hitting bumps just right with the right or left front wheel I sense the chassis twisting at the A pillar. Is this to be expected?

Thanks.
Congrats on new to you BMW. It is a 12 year old car, and a BMW at that... How many miles?

1. Not normal. Did you check motor mounts?
2. Mine is a coupe and it's solid. Is it while you're pushing it?
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Old 01-23-2020, 11:32 AM
mulsanne mulsanne is offline
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Thank you for the response. My 650i has just under 14,000 miles. The original owner rarely drove it. I was thinking maybe engine mounts, but I don't want to needlessly go down that rabbit hole if this is a normal characteristic of the car. A convertible is a bit different than a coupe, because it lacks the chassis rigidity of a metal roof, so I'm not sure chassis behaviour would be the same.
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Old 01-23-2020, 02:21 PM
HerbP HerbP is offline
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Quote:
Originally Posted by mulsanne View Post
I just purchased a 2008 650i convertible, and the the more I drive it the more I like it. But I have noticed a couple of things that are a bit disappointing:

1. I noticed that engine vibrations can sometimes be felt in the steering wheel seat at idle. Is this normal?

2. The chassis is not as rigid as I thought it would be. When hitting bumps just right with the right or left front wheel I sense the chassis twisting at the A pillar. Is this to be expected?

Thanks.
If the engine vibration is coming thru the steering wheel, do you have any check engine lights. This sounds like a miss from possible a low voltage battery, this is not normal. The transmission mount might be something to look at?

The convertible is like 500 lbs heavier than the coupe, so the chassis should be more rigid. The run flat tires & high air pressure are probably contributing to the harsh ride, but not twisting. Did you run a Carfax to make sure this is not a rebuilt car?
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Old 01-24-2020, 10:18 PM
mulsanne mulsanne is offline
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The engine runs smoothly, so I don't think misfires are the cause. I bought the car from a friend, who knows the original owner and the car's history, so I didn't run a Carfax, but I think I will. The 19" run flats were replaced with 18" M wheels and 245/45 R18 Michelin MCM4s to make the ride less harsh. I don't think the tires are contributing. I'm wondering if the engine mounts have become stiff from 12 years of little use.
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Old 01-26-2020, 09:41 AM
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Mulchman Mulchman is offline
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Motor mounts for sure. The giveaway is vibration at idle. They are liquid filled and your have no liquid. Not terribly expensive but a PITA job. Lift engine, drop front subframe.....

The other issue is your front lower front control arm bushings. They go bad every 20k or so. You can press in new bushes or replace the whole arm with ball joint. Very simple job if you can turn (and own) a wrench. If you buy the whole arm and get Lemforder (OEM for all BMW suspension parts) they'll cost about the same as buying bushings and paying to have them pressed. Easy to check them as well. Remove the cover under engine and they are the two huge (3 or 4 inches across) bushings near the bumper. Look for signs of the fluid leaking out (they are also fluid filled) and stick a big screw driver behind it and pull. They will visibly move an inch or so when you pull, that is where your play is coming from. Don't worry, both control arms (I think they call them tension struts will set you back about $350. If you can't DIY it is a simple job that couldn't pay more than 2 or 3 hours labor, but WELL worth it. It'll change your ride.

These cars handle like supercars when they are properly dialed in. I have 163k on the dial. Just pulled it apart this weekend for a knock sensor but she's going to get lots of love while I'm in there. Still turn heads too. Went to VW yesterday to get fluids and filters for my kids car. Half the service department was out looking at my 2007
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Old 01-26-2020, 09:47 AM
zod zod is offline
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I've had my 2008 E64 for almost two years now (101K mi). I don't have anything like what you've described. The E64 is heavier than the E63 to stiffen the chassis to be similar to the E63. I have 19" wheels and really like the Michelin Pilot Sport A/S 3+. I've run them on my E28 535is for quite awhile too.

https://www.tirerack.com/tires/tests...y.jsp?ttid=241

Last edited by zod; 01-26-2020 at 09:51 AM.
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Old 01-26-2020, 09:48 AM
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Mulchman Mulchman is offline
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You can check motor mounts by opening hood, putting the car in gear, while HOLDING THE BRAKE VERY HARD give it some gas. Try both reverse and drive. The motor will move a little (like jump up) on one side and/or the other meaning you have a bad mount. If you drive through your garage door, I'm deleting this post
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Old 01-26-2020, 10:57 AM
mulsanne mulsanne is offline
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@Mulchman thanks for the great reply. I'll check both the motor mounts and bushings, and I promise not to drive through the garage door. Love the car!
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Old 01-26-2020, 10:58 AM
mulsanne mulsanne is offline
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@Zod thanks. I'll look into your suggestion.
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Old 01-28-2020, 12:21 PM
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If you drive through your garage door, I'm deleting this post
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