I have run the Firestone Firehawk Indy 500 on my Sonic and my C6 Corvette. They have been my street tire and I've used them in autocross regularly and on the track.
I love them.
I don't think you can get a better bang for your buck. They stick like glue, never had any issues in the rain, never hydroplaned once, wear nicely. The only catch is they aren't run-flats, if you feel you need that feature.
When pushed hard, they are very forgiving and predictable. The grip levels feel linear when pushed to the limit, they don't suddenly let go on you.
I highly recommend them to anyone looking for a budget tire for their Corvette.