I am running the Azenis on my stock G20 wheels too. At the track (road course) oh man they rule. On the street they are nice too, however I can feel that they have a pretty stiff sidewall. I've only drag raced with the azenis once. Trying them at the normal ~35 psi I wasn't able to hook up very well at all, however when i lowered them down to around 23psi that's when they started to kick ass. Unfortunately I only had 3 passes with them at that psi. First run i launched too high and spun them. Next two runs i bogged and still ran a 2.3x 60ft both times.
I can't wait until I can make it back again.