I've purchased '03 Super Black 350z Track about 2 months ago. I need to get new tires on it. I was thinking about trying out Falken Azenis RT-615 (since falken claims that RT-615's are pretty good on wet surface n rain). I haven't ran into a person that rides on RT-615's. I've checked out the tire sizes for my car for the Azenis and fortunately they have the right sizes for both front and rear (except the thickness isn't 45...instead 40...but i dont think thats gonna be a problem). If you know ANYTHING about the RT-615's or even better if you own them...PLEASE share your experience about them with me. My other choices would be Bfgoodrich g-Force KDW2, Toyo T1R, or Nitto NT555. MOST IMPORTANTLY, I'm plan on canyon riding alot with my next tires so I want MAXIMUM grip and cornering on sharp hairpins. Please don't hesitate to share your knowledge with me. THANKS.