Thanks all, I'm getting a much better feel for what I need - great stuff!

So I think if I changed the SL, I would go only for 17." Comfort is more important than looks for me.

Ken Silver
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1993 SL500, glistening black/grey on black leather, soon to be best in country!
1991 Daimler, shiny grey on grey leather, best in country!
1991 Miata MX5, sparkling BRG on tan leather, wife's (but my polishing)
1992 Honda US s/wagon, black/grey
ex 350SL, 230E, 280E (and a lot of other makes not as nice)