I bought some alloys off ebay that are off a 2010 model a4. I put them on my a4 b7 cab and they don't fit the offset is different by 9mm. I have been advised that I could get spacers and longer wheel nuts for them to fit. However, I was advised against this as the mechanic says it is disturbing the overall physics of the car and will not only compromise the drive but also safety may be a factor. Should I get some new wheels or shall I risk spacers and longer wheel nuts??