lugnuts

Hi there ! So I bought brand new Wheels and Tires Setup for my 2018 TourX. Tires are 235/50/18 Pirelli P Zero and Touren TR60 Wheels 18x8, 5x115 , 40 mm. I guess wheels are exactly the same dimensions as the OEM. For those who knows more about the topic than I do, I have 3 questions... Q1. I...