There are quite a few tire responses in other tire threads, as well as in the "What do you do with your 790D today" plus off-topic thread, (I perused the 19 pages there, and copied the tire posts over here).
I'll look into condensing more posts into this thread, so like the exhaust thread, it's all in one place.
What tires do you like? Which have you used that worked the best for you on street, as well as track?
I know there are a handful of solid brands out there, so I will only mention that I've done a lot of product testing, (grin), with Michelin pilot power 2CT's. They work wonderful for street, a nice wearing center, as well as a dual compound outer half inch, which is a softer compound to provide more grip, when you teetering towards your knee and elbow against the tarmac.
After extensive testing with the Mich Road 4's, (now Road 5's), I'd prefer these for the street, as they provide excellent grip/wet weather, super longer lasting tread, and the same dual compound with the outer/softer/grippier edge, (2CT).
Personally, I never have used street tires on the track, it seems to work for many people, but I've only used race tires, (Michelin), for track days, as well as racing, and full wets, (for rain racing).