I have one set 305/50X15 rear with 245/50X15 front and another set 275/45X16 rear with 245/50X15 front.
First autocross I ran with the Pantera, I was half way around a 180º, hit the go pedal, and pushed the 225/50X15 tires sideways straight at the grass. 245s still push, but not quite as bad as the 225.