Probably been gone over to death but I have 2 questions.

2 part question.
1. With 8.5x19 / 10x19 wheels, 245 or 255/35/19 front tire with a 285/35/19 rear tire? RE71Rs.
2. What is max -camber on stock PASM 2018 Cayman GTS?

Use is street and autox, maybe occasional track day.

 

I can't tell you what a 718 is but I can say that a 981 (w/PASM) can get close to -2 max. For that reason most will go w/ GT3 LCA's to get to a negative camber of there liking