710s. If you can get them in your size, which we CAN'T on our size rims
, then they are the #1 R Compound tire right now.
For the Street Tire classes, like STS, the hot tire right now is the Falken Azenis RT-615, which is what I am running. Grassroots Motorsport tested it and made it #1, and at the racing school, pretty much everyone not on R-Comps were running the Azenis.