I had 711's on the Miata for a while. They did just fine in day to day driving, but I took them to Canyon Lake (guess why it's called that?) once or twice, and realized I was going to need new tires. They didn't like heat all that much, and corner after corner after corner, they get hot. If you're just cruising around they're alright, but they won't do great if you abuse them. That said, the set I had was well used. They probably still had 40-50% of their tread left, but I wasn't at all upset to swap them for some GS-D3 Goodyears.
If you're looking for a cheap, yet sticky tire, I recommend the Nitto NT05 or the Dunlop Direzza Star-spec.