I had a great experience with the Azenis 615's , great sizes and prices availble from edgeracing.com
they had maybe 3% less traction than the RE01R and about 40% cheaper. If the Dunlop Direzza Z1 is the same grip or higher of the 615, and or cheaper. it would have to be a crazy deal. I was super stoked on the 615's when i had them. (ran 255/40/17 versus 245/40/17) grip feels the same but my tire is a tiny bit skinner.
I think Cory has raced on both tires, so he's the expert!
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Fighting uphill battles, one bullet at a time!
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