Are eibach pro-spacer hubcentric wheel spacers safe?

[5_0coyote]

Ok guys as the titles says are those spacers safe? I have been running them for like 2 months without a problem but a shop told me that there not safe.. What you guys think? And here is the link from where i got them.. http://www.americanmuscle.com/eibach-spacers-25mm.html

 

[termin80r]

I've always heard people say that they were unsafe when I had some on my 4x4, but they were a lot thicker than 25mm. I ran some 2" spacers built the same way on my 450 r four wheeler and everyone said they would break, but they never did. I think longer studs and the layover wheel spacer would be safer though.

 

[50enzo]

look up maximum motorsports...they make stuff specifically for mustangs
INCLUDING hub centric spacers...they also give detailed descriptions ie..how thick you can or should go before you go with a longer stud