Some Yorkies have a more wirey type coat. I have a friend that has an AKC registered Yorkie and she has a much more wirey coat that all her other Yorkies she owns.
I would not worry too much about it, it can also change as they loose their puppy coat and a smoother one grow in as they age.
The wirey one will probably not tangle as badly as the smoother coats do, so even if it stays a little wirey, count yourself lucky because you won't have the constant knotting that some of us deal with daily.
As long as you love the little guy that is what is important. I hope he brings you years and years of happiness!
__________________  It's raining Yorkies here! LOL Teek  ,Rowan  , Raksha (Grand Puppy)  , Raelyn  |