Financial spreadbetters expect the leading European benchmark indexes to fall on Wednesday, after the U.S. Federal reserve warned Europe's debt crisis was a big risk to the U.S. economy but remained silent about any immediate stimulus measures.

Financial spreadbetters expect the FTSE 100 <.FTSE> to open 30 to 32 points lower, or as much as 0.6 percent, Germany's DAX <.GDAXI> to open around 30 points lower, or as much as 0.5 percent, and France's CAC-40 <.FCHI> to open around 18 points lower, or as much as 0.6 percent.

(Reporting by Blaise Robinson)