Just want to add for the ones looking for tyres in the E9 original dimensions, that an interesting alternative for the E9 coupes could be the Fulda Classic line tyre "Carat Assuro" 195/70/VR14. A modern technology tyre in at least the correct E9 dimensions and for a reasonable price. Of course, it also exists without the white text.
http://www.fulda.com/fulda_home_en/our_tires/classic_line/Assuro.jsp
On the other hand, the Michelin XWX 205/70/VT14 might be as close as possible, to the original E9 tyre, one could find nowadays.
Cheers