[MBZ] Yet another tire question

[John Robbins]

Since the topic of the day seems to be tires and whatnot, and since mine 
are basically bald, I figured it would be a good time to ask. :)

I've got 185/70/R14 tires on there now, and was playing around and 
noticed that 205/60/R14 tires are almost the exact same diameter.  Will 
the extra width work with the stock bundt cake rims?  Or do I just need 
to suck it up and get 15" rims for a slightly lower profile sidewall?

One other thing I saw was that the owners manual on the W116 CD provides 
tire sizes for a 280SE and 450SEL.  The 450SEL has 6.5" wide rims (with 
stock size of 205/60/R14), but the 280SE has 6" wide rims (with 
185/70/R14).  Was wondering if anyone knows what the 300SD uses....

Thanks!!!
John
'79 300SD