I have a 2005 Mini S, Convertable with 6speed Auto
Mods to date: Milltek Header/ Milltek Catback
15% M7 reduced pully

I am experiancing vibration with the car when at Idel in Drive. With the A/C running I am getting such an extream vibration I need to put the car in nutral and raise the rpm to 1000

The car vibrated alot without the AC running untill I adjusted the Idel RPM to 750. This fixed the non AC operations.

I dont know of anyone with this problem with a manual trans. is there anyone out there that has the same or simular problem?
Or any solutions?

My local Mechanic that I trust cant figure it out and I am at a loss.

 

Bump.
Any input?

 

What has your dealer said about this? With an 05, there should be no reason why not to take it in.

 

the dealer has been good about overlooking the mods, said that the Milltek exhaust is the problem. I have had it looked at by a few people and it isnt the exhaust. I was hoping maybe someone has simular mods with the auto trans. maybe they can help verify in my mind that it isnt because of the pulley.

 

i have similar problem; over here our normal ambient temp is 30- 34 degress C( 86-93 degrees F ) so we have the air con on whenever we drive; in fact; air con is a standard items for cars in our region; at normal idle at 750 rpm, the vibration is ok; however after 1-2 minutes at idle in a jam or at a traffic light, the idling rpm goes up to 1000-1100 rpm; in neutral, the vibration is still bearable; however if u r in D or R, the resonance vibration is so strong that my passenger always ask if there is something wrong with my car;

BMW Asia refuses to acknowledge the problem till the Service Advisor showed him in their own demo car; in fact, to my knowledge, this prob affects all auto copper S with air con; all the demo cars in the show room has this prob; even the JCW auto ones;

BMW Asia have been collecting data for the past 3 months and u guess it, i was told to wait for software upgrade;

this prob happens to me at high current load ie air con on, zenon on; i noted that after the idling rpm goes from 750 rpm to 1000rpm; it will not come back down unless you throttle past 2500 rpm for 1 to 2 second or off the air con;

so now that it is summer over your side; i think more auto cars will have this prob; to test; just sit in your auto S for 3 minutes at idle in D and air con at full and wait for the idling rpm to shoot up to 1000 rpm by itself; then u will feel the vibration;

any one with any solution welcome; thanks

cos i have this resonace vibration 365 days a year;

 

I have the same problem, (vibration at idle in drive and AC on). I too am running a 15% pulley and modified exhust, (header and cat) stock mufflers and pipe though.
I never ran the AC before the mods so I don't have a comparison. I did notice my idle RPM runs 1000 with AC on.
I doubt if it is your Milltek. Could be the pulley, may need a different belt, who knows?

 

My RPM does not ramp up to 1000 with AC running. Maybe that is part of it.
I have another appointment with MINI next week.
I will post what is found if anything.

PS: anyone have problems with the rear tires wearing out way too fast?

 

I have a 2006 MCSa with an Alta 15% pulley and Milltek catback and I just noticed mine yesterday! The vibration was intense! The last post was in 2006, has there been any updates on this?

 

2006 MCS, 70 000kms, stock exhaust.
Noticed mine about a year ago. Determined it to be the exhaust hanger worn out. With the Miltek guys, I would read through billswebspace.com, he noted a necessary mod to the new hangers to satisfy clearance issues. With mine, the exhaust shakes or vibrates a little bit ( no more than any other small car I've owned ) and is just barley touching the car underbody near the backseat. Only happens when AC on in park or stopped, or climbing a hill at dead slow speeds.

You can simply (with the appropriate hand protection ) grab the exhaust tips while the car is being noisy (running) and steady them, move them about as there is a bit of play and you may find a sweet spot where it goes away. if so.. its the exhaust hanger(s) are bitched.

 

I just came across this thread. So is that what the conclusion was, the exhaust hangers being worn?