Welcome Jeff N:
Don't give up on the posting - I see that your original questions were posted on the 23rd, and Friday night/Saturdays/Sunday mornings can get a bit thin on posting responses. Also, a lot of what you are asking is already answered in the archives, and that is a good spot to start, using words such as 190, offset, wheel, width, etc. This will find threads such as: URGENT - Will 190E rims fit a 300E?
and MB wheel offsets
Anyway, If you don't search the archives, a nice offset explanation to elaborate on what Mike described is at the tirerack site. Another is at: http://www.usacomp.com/Offset.htm
. Offset and wheel width calculators are at: http://www.miata.net/garage/tirecalc.html
. These will show you what changes in clearance you can expect between different wheel widths and offsets.
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E