I really need some help here. I bought a set of used Mille Wheels and of course they didn't come with any mounting hardwares. The stock lug bolts are a little short, I can only do 2 full turns on them. I think I can get longer ones from the internet but am not sure if the Mille Wheels for Audi's use the cone seating or the ball seating. It's kind of hard to tell by looking. I am suspecting it's ball seating like the OEM, but am not sure. Anyone out there has experience with this?

Thanks.