#1) Hankook Ventus V12 225/40/18 on stock Spec.B wheels. Can't remember now. Car has 86k, stockers lasted about 22k, and Sumitomos must have been on for maybe 15k. So probably close to 50,000 miles on them.
#2) San Diego, CA
#3) Mostly commute, with some spirited days from time to time.
#4) 80% highway, 20% city
#5) Stock RE050A, Sumitomo HTR Z III (225/40/18)
#6) I had the stock tires for a hair over 20k, then replaced them with the Sumitomos which I liked, until I kept having to replace tires for getting bumps (driving in Tijuana and hitting potholes). Discount Tire doesn't usually carry them so having to wait for them to replace got a little old. The V12s have softer sidewalls so their handling feels a little squishy, but they grab on well when pushed. I haven't noticed any noise change, but I usually have the music on and my exhaust is louder than any road noise (I have an SPT exhaust, so it's not that loud). I'm very happy with their wear for sporty tires.
I now have a bump on one of the V12s and it's time to replace them all. Discount Tire doesn't seem to carry 225/40/18 anymore, I can't find them in San Diego today. I have used their hazard insurance with all my tires and it worked great when I got bumps and the tires were new, but as the tires wear and there comes a point when all should be replaced, not sure if the insurance is worth it.