Wheel Lug Sizing for Spacers?

[Jesse@MBRP]

13 X5 50i

I picked up some 12mm spacers for my new ride and I am looking for some extended wheel lugs and I noticed there are two different 14mm wheel studs that are listed for some of the newer BMW's. 14mm x 1.25 or the 14mm x 1.5. The rear 30mm spacers I bought came with some bolts but the fronts did not and they are clearly too short for safety.

Any help would be appreciated.