Well simple take your stock lug and put it in your stock wheel measure the amount sticking out...

Any who as long as the bolts not to long so a few mm shorter wont be an issue but I would want as long as possible on my car that would scare the **** out of me at 150mph lol
Did they send you the correct centric size wheel or were centric spacers included with the order?

3rd edit! lol

After rereading for this for the 6th time i see you said they are longer. Once you get the tires mounted on the wheels take your wheel and your new lugs run them in and with the ebrake off turn your tire and wheel if they are to long you will hear / feel them hit on the inside.