The R6 is a more road course racing oriented tire, while the azenis are very good street tire imho for the summer. I DD them with now problems and manged to cut a 2.0 60ft in the heavy G20, they stick well all around.
The BFG drags I have now are awesome though. I am thinking of switching to hoosier drag radials if the nscra rules allow, need all the traction I can get with the 1 tire fyah.
Any other1/4 mile times out there on street tires?