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  #11  
Old 10-30-2012, 07:58 PM
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Did you get the vibration taken care of? What was the final outcome??
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  #12  
Old 01-04-2013, 07:31 PM
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Quote:
Originally Posted by cmyX6go View Post
Do you have 19s or 20s on the 50i?

I ask because the feel of my steering wheel is driving me crazy. Put aside the fact that I went from non adaptive steering to the servotronic speed sensitive steering that is standard in the ///M. That alone is pissing me off. I am so used to how my steering used to be tight all the time, I really miss it. But back to my issue.

I'm still getting used to the difference between the 50i and the ///M. I had 19s on the 50i, and have the 20s on the ///M. I feel a slight vibration in the steering wheel at lower speeds (say up to 50-60 mph). Once I hit 65, I can see the steering wheel shutter. I haven't had time to go to the dealer. I was out with my brother today and he drove ( he has a B7) and I told him what I felt in the steering wheel. He says it's normal, it's due to the larger, wider tires. He feels the difference between his winter set up and his 21" wheels. I refuse to accept that this is normal. I should be able to get to the dealer soon, and I will see for myself when I put on the 19" wheels with the 255 snow tires but I'm curious. Did you have a shutter? Can you feel the difference between the 50i and the ///M? I'm OK with the ride but this is going to push me over the edge!

TIA
Super sorry for my lame-late response... I didn't see this.

I had 20"s on my ///M and have 20"s on my 50i.

On my ///M, I felt more steering wheel vibration (like a tiny bit out of balance) than I do my 50i. It was there on both the summer tires and the winters (Pirelli Scorpion RFT's). I recall bringing the ///M back into the tire shop after the first swap back to summers. They swore the tires were (road force) balanced perfectly. I guess I got used to it, but I remember thinking 'this is what a balanced ride is supposed to feel like.

I just switched out my summers for winter Scorpions again (still 20") on my 50i and the ride seems great/balanced.

I have no idea why the difference - can only think that the differences in suspension are causal.

FYI - my 50i has adaptive and I run in 'comfort' (non-sport) mode always.
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  #13  
Old 01-05-2013, 08:14 AM
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Juanted and KYZRSOSE drove it but they said they didn't feel anything. I'm assuming it's because Juanted was driving so fast the wheels weren't on the pavement.

I had an appointment to take it in the week Sandy hit. The dealer was out of commission for a while. Then snow was in the forecast so I changed over to my winter set up - 19s with Pirelli RFT. The vibration is gone. I'll deal with it when I switch over again. Thanks for the response.

The power is ridiculous. When I unleash that M button.... Damn! The acceleration is neck jerking.

I always drove the 50i in sport mode. I liked the way it held me back in slower traffic as soon as I eased off the pedal. Less need for the brakes or downshifting. The ///M shifts differently in sport, it's very jerky.

Denalio - Sorry, I never saw your post. How are you liking yours?
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Last edited by cmyX6go; 01-06-2013 at 12:10 PM.
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  #14  
Old 01-05-2013, 09:22 AM
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I'm a bit of a nut when it comes to alignment and balance, so you can imagine I've been through this. As perfect as a road force balance should be, every hub is different and I would find a highly rated specialist who can road force as well as do an on car balance using a strobe...
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  #15  
Old 01-10-2013, 04:33 PM
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Quote:
Originally Posted by cmyX6go View Post
Juanted and KYZRSOSE drove it but they said they didn't feel anything. I'm assuming it's because Juanted was driving so fast the wheels weren't on the pavement.

I had an appointment to take it in the week Sandy hit. The dealer was out of commission for a while. Then snow was in the forecast so I changed over to my winter set up - 19s with Pirelli RFT. The vibration is gone. I'll deal with it when I switch over again. Thanks for the response.

The power is ridiculous. When I unleash that M button.... Damn! The acceleration is neck jerking.

I always drove the 50i in sport mode. I liked the way it held me back in slower traffic as soon as I eased off the pedal. Less need for the brakes or downshifting. The ///M shifts differently in sport, it's very jerky.

Denalio - Sorry, I never saw your post. How are you liking yours?
My new (700 miles) x5M has zero vibration at any speed. Also, it does not jerk in sport mode. I have the M drive set to sport, sport and dynamic. You need to get those tires checked out Laura. Mine has Bridgestone Dueler HP sports (if that makes any difference). I am running 38 psi cold on all 4 corners. I would start there. Lastly, summer run flats sometimes vibrate when it is cold outside (I see you are in the Northeast). Perhaps your air is low as I have run into people who have vibration problems on other BMW models when the air pressure is not dialed in correctly.
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  #16  
Old 01-15-2013, 06:42 AM
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Originally Posted by alpine300zhp View Post
My new (700 miles) x5M has zero vibration at any speed. Also, it does not jerk in sport mode. I have the M drive set to sport, sport and dynamic. You need to get those tires checked out Laura. Mine has Bridgestone Dueler HP sports (if that makes any difference). I am running 38 psi cold on all 4 corners. I would start there. Lastly, summer run flats sometimes vibrate when it is cold outside (I see you are in the Northeast). Perhaps your air is low as I have run into people who have vibration problems on other BMW models when the air pressure is not dialed in correctly.
I'm pretty good about checking my tire pressure. I have my winter set up on, 19" square set up (255s) Pireli RFTs. I usually run 34psi all around. I will bring it in to check the vibration when I put the summer wheels back on.

I do have a service appointment to check out my parking brake. I don't think it's holding correctly. I've been parking on a sloped driveway. With my foot on the brake, I engage the parking brake, take my foot off the brake pedal and shift into park. All is well until I shut off the engine. Then I jerk back. Me no like...I feel like I'm going to go through the garage door. I'll ask them to check out the shifting too. I'm using the same settings.

I can't wait until the weather warms up, I miss those monster tires.
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  #17  
Old 01-15-2013, 01:51 PM
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Quote:
Originally Posted by cmyX6go View Post
I'm pretty good about checking my tire pressure. I have my winter set up on, 19" square set up (255s) Pireli RFTs. I usually run 34psi all around. I will bring it in to check the vibration when I put the summer wheels back on.

I do have a service appointment to check out my parking brake. I don't think it's holding correctly. I've been parking on a sloped driveway. With my foot on the brake, I engage the parking brake, take my foot off the brake pedal and shift into park. All is well until I shut off the engine. Then I jerk back. Me no like...I feel like I'm going to go through the garage door. I'll ask them to check out the shifting too. I'm using the same settings.

I can't wait until the weather warms up, I miss those monster tires.
They will get it sorted out for you. Sounds like maybe you need a brake adjustment because that jerk back should not be happening. The vibration must be related to the tires or wheels (possibly a bent rim?) because you are not experiencing the problem with your winter setup. Nice to join the small xM family here. I have been a lurker on xoutpost for years and remember when you started with your first x5 (and your username was cmyx5go) and watched as you and others (Kyzersoze, alexmish and some others I cannot remember) slowly moved up from the 6 cylinder models to 8 cylinders and, in your case, moved onto x6 from x5. I took an x hiatus for about 7 years so I have not been around here since circa 2006 and recently decided to get back into an x after falling in love with the x5m/x6m (needed another SUV and wanted an M5 so x5M was the perfect solution). I pondered the Cayenne Turbo and the ML63, but my love for BMW won over.
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Last edited by alpine300zhp; 01-15-2013 at 03:16 PM.
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  #18  
Old 01-16-2013, 08:06 AM
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Jeez, it took you six years to post? That's a hell of a lurk. And for the record, I never drove a 6 cylinder
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  #19  
Old 01-16-2013, 11:45 AM
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Originally Posted by cmyX6go View Post
Jeez, it took you six years to post? That's a hell of a lurk. And for the record, I never drove a 6 cylinder
I have been a frequent poster over on bimmerfest for years since that forum caters to all BMW models and I have a few friends that hang out there. My last x bimmer was in 2006 so I never bothered to post here given that my posts would have had little value. The xM forum on bimmerfest has very little traffic except for the 3 other guys that joined me in purchasing a x5M or x6M in December 2012. I thought maybe I should check out xoutpost and I see that there are more xM owners here. BTW..sorry I got your 6 cylinder ownership wrong...my memory is not the best for internet forums since there is little brain space left once I finish stuffing all of the legal related stuff I have to remember in there.
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