You maybe able to squeeze some 19's but I have never seen it. I run 18's with a bilstein PSS coil-over suspension kit. The coilovers up front have 2 spring set-up. There is the main coil and a helper spring to make the ride better. With the addition of aftermarket rear shock mounts, Xbrace and BAV camber kit. It will go around any comer as long as you are strong enough to turn the wheel.
There are a lot of other good options but get the some better rear shock mounts and the BAV rear camber kit no matter what you do.