1st Gen R53 Cooper S Most liked posts in thread: Odd problem

Simple solution, park with the bottom of the tire on top. Simple clean solution. :wink:

Sounds like flat spots to me. Drive more park less. :biggrin5:

 

In the winter months I'll notice the same thing...

The car sits overnight in the cold... Of course the bottom is always formed as a flat shape (contact patch)....

Start out driving.... The flexing of the sidewall construction causes heat to buildup.... Depending on the outside temperature.... The heat created by the flexing of the tread and sidewalls of the tires gradually allow the tire to eliminate the flat spot that was created when sitting stationary over night in the cold.... Time and distance would vary based on temperature....

Construction of the tire also has an impact.....

 

You do know what the quickest fix for this is, don't you? Here it is: don't stop driving it! Problem solved. You may (will) need an I/V drip of a mixture of Coffee and Red Bull, but by golly those flat spots will be a thing of the past

 

Ditto on the flat spot.

As far as the G2 MCS, they are turbo cars, and a small amount of whistle on a stock car is normal, but this is a very blanketed question, as a lightly worn pulley bearing can cause a "whistle" type noise, as well as vacuum/boost leaks. As the N14 is a vacuum dependent engine you would most likely notice a stumble at idle, CEL, misfire codes if the leak is large enough, etc.

Good luck on the diagnosis, let us know if we can help.

 

Yeah my tires get like that in the Winter also. Jack stands help if your not moving it for a while.

 

I've seen CV axles cause vibrations/off balance/ flat spot symptoms when they are failing. I wouldn't be so quick to think its just flat spots.

Noticeable flat spots seem to take a fair amount of time to develop. Does the feeling go away at different speeds?