89W is quite as rare as 88D for example. most wouldn't like the ass dragons. 89W is by far the most flashy ass dragon pair imo.
I had 8FC once in W32 (my normal Thanaz size) and they were tight as fuck. You can look for an old thread of me:http://www.honestforum.com/diesel-je...nion-pics.html
finally I got them in W33 and that's ok for me. stretch factor makes them stay in the original size. 71B as a comparison is also tight, but more rigid. I could live with my W32 in 8FC, but in 71B I could barely walk in W32. Got them in W33 too.
89W is 100% cotton. Look for the stretch your 100% cotton pairs have "done" (become?) during wear. 89W is the thinnest pair of Diesel I own. They feel like almost nothing. perfect summer pair. quite similar to 8FC, but 8FC is "thicker". both made in northern Africa (89W in Tunisia, 8FC in Morocco).
In comparison to 8IW, 8IW is much looser in the thigh, but at least for me very tight in the waist. In 71J I can wear a W32, tight but ok.
So all in all I guess you can take 8FC in W30 or W31. They don't give that much.
are you interested in a pair of 89W in W32? obviously stretched out. shot me a PM if you are.