2000 Audi R8

Images copyright Bob Nelson
Text copyright Michael J. Fuller
The longtails unclothed.  The R8's rear wing is attached directly to the rear bodywork.  The composite structure seen here further strengthens the rear body work, transmits downforce to the chassis, and acts as the rear crash structure.  One draw back though is the increased polar moment (longtail body work plus underlying composite subframe). 
The R8's rear wing.   Bolted to the center section of the rear body work is a gurney flap.  This increase base area, produces downforce, but also increases engine bay flow through. 
Compare the slot gap of the R8's wing to the Reynard 2KQ's rear wing slot gap

ęCopyright 2000, Michael J. Fuller