Calling HIRISC

[cmyX6go]

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?

[rocky1536]

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...

[alpine300zhp]

Originally Posted by cmyX6go

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.

[cmyX6go]

Originally Posted by alpine300zhp

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.

[alpine300zhp]

Originally Posted by cmyX6go

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.

[cmyX6go]

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

[alpine300zhp]

Originally Posted by cmyX6go

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.