For those who have the S model and have mounted winter tires on. What is that extra little bolt in the front rotors? The guy that changed my tires took them off because they wouldnt mount on right if they werent off. The back rotors dont have them just the front. Its a bolt and it sticks out about a inch.

 

I believe that bolt is there to prevent rotation of the staggered sports wheels. It's probably safe to remove it if you want a non-staggered setup.

 

I took the bolt off for my 17" winter wheels/tires. It is there so you can't swap your rear wheels to the front.

 

+1 They are to idiot proof the wheels against rotating. Dont worry bout it..

 

Definitely took me about an extra hour to change my tires because of that piece of crap.