Other Competition tires?

[Verik]

bump, anyone?

[StraightSix]

Comparing the Azenis and Yokos is an apple and oranges kind of affair. The tires you're looking to replace are a DOT R-comp, whereas the RT-615 is a sticky street tire. If you're competing in STS or something, the RT-615 is a decent choice.

To stay in the same class of tire, you should be looking for R-comps, as those are more likely to give you a similar level of performance. The Toyo RA-1 is one example and Edge Racing is selling those for about $170/ea.

[Congogrey]

I do not race on DOT-R compound tires in my class. But, a lot of the guys that I know who do run the Kuhmo (sp?) V710.