So I've had these tires on the car since brand new and they've been run on the car for maybe 40,000km. They're pretty good for fuel economy, that's why Mazda chose them as stock tires for the 3. Handling is ok, I've taken some highway corners at good speed with just a bit of tire whine but I did manage to get it to understeer at the right turn curve coming off one highway offramp.
They're have about 6-7/32nds left so not terrible, but driving on the highway today they were hydroplaning in anything resembling a puddle above 90km/h. I'm going to throw winter tires on stat and get new tires next year. These Turanzas are pretty cheap at Costco with a supposed 115,000km warranty but if they only last 40,000km before developing terrible hydroplaning resistance despite having what should be a season worth of tread left, I wouldn't buy them again.
Competitors for the same price:
-Continental Extreme Contact DWS (or DW, since i'm not looking for snow traction)
-Michelin Premier (advertised to retain excellent wet traction even when 50% worn)
-Hankook EVO V12 (may only last 40-50,000km, but way better performance than the Turanzas and should retain good wet traction to the last (legal) 32nd.