I don't have an S near me at the moment. Does anyone know offhand or feel like running out in the bitter cold gripping the nation and measuring?

Thanks!

 

My S is not near me either, but why do you want to know the size (I assume by "big" you mean the outside diameter and not the thickness) of the steering wheel?

 

I want to know so that I can make an informed decision about aftermarket wheels. the S2K wheel is about the size I like, so I want something similar. And yes, I did mean diameter... should have specified that. Sorry.