Seeking tire advice...

[997S22]

That set up is a bit unusual. Normally you run wider tires in rear than in the front. To aid front grip on turn in and because the wider rear tires require less negative camber the front generally carries more negative camber. You likely need upper control plates or GT3 lower control arms to add more camber. Most of us go with the GT3 LCAs when we do it. My Cayman racing set up is more extreme but to give you a sense: 245 fronts/ 305 rears, front -3.9 / rear -3.4