I run 19x8.5 & 19x9.5 I'll be upgrading to a wide body running 19x10 & 19x12 rears with 305 rear tires later.
I drive my car hard but I don't track it often enough to go 17's or 18's. I like the look of the 19's it fills in the wheel wells nicely to me.
I had it lowered on kw v3's and now ohlins r&t. It drives amazing so far!