Need some help on offset ...am I correct in saying that my 2011 4.6 has a 39mm wheel offset? I'm looking at some new wheels but everything I like is either 38mm or 40mm so I'm thinking being that I have Brembo calipers I'd go with the 38mm since that would put the calipers 1mm further away from the wheels.....lastly are Enkel wheels a decent brand? Thanks in advance