It does sound like Asperger's to me. I have four children with Asperger's and I have Asperger's myself so I know it well. Does he have sensory issues and high anxiety?
All the things you mentioned... motor tics, hyperfocus behaviors, very smart, trouble with friends, poor fine motor skills, poor eye contact, etc. All of these things point to Asperger's. I would evaluate how he interprets tone of voice, sarcasm, etc. and whether or not he takes things literally too often. You might also want to do research on Nonverbal Learning Disorder. Asperger's and NVLD overlap in many ways and are very similar to each other.
I think an evaluation is definitely in order. He has many signs of Asperger's. And he doesn't have to have every single sign to get the diagnosis. All Aspies are different and they can present with many different signs. For example... I have two brothers, both with Asperger's, both adults. One of them is very shy, awkward, social phobia, no eye contact, barely talks, etc. The other is very talkative and doesn't have the ability to filter what he says. This means he says EVERY SINGLE THING that pops into his head. The problem with this is he is a very negative person. He has offended and shocked so many people, it's unbelievable. Both brothers are obsessive, anxious, have sensory issues, and have trouble with friendships. And even though they have trouble with friendships for different reasons, it all comes from Asperger's.
Like they say, if you've met one Aspie, you've met ONE Aspie!
Good luck!
