Wheel Spacers And Adaptors

Hi,

I have a 94 jetta that has 14" factory rims, but i got some 16" chromes that i want to install but unfortunately, they dont fit. The chrome rims cut the lug space in half and since i cant return the rims, was wondering about spacers or adaptors but i have been hearing that they are dangerous and a tire might come off......any suggestions on how i can get the rims to fit??????? i really want to have them installed to replace the "shady" factory type.

Thanks.