This season I ran with a square set up, BFG R1s, 275/35/18 on APEX 18X10 rims. True to expectations, the car will understeer if push hard into a tight turn, so expect a slight opening of the wheel, or brush of the break to get the front to turn. Otherwise, I felt the car accepted the tires very well. They did begin to go away after six events, but will stick if you give them time to heat up.
Edit, please change six events to six days, or 18 heat cycles.