want to know How can I register while I'm out of New York State?
Yes
You can request a New York State registration and a certificate of title by mail from outside New York. You should send these items to a local DMV office
and how do I do if I travel and my registration expires?
must determine if the other state can issue a "in transit" permit, which allows you to transport a vehicle to New York so you can register it
Do you know amount. What if I don't know the correct amount to renew?
You can send a check payable to 'Commissioner of Motor Vehicles', but do not write the amount, please.
Is there another way to renew?
Yes, you can do it online.
What if my address has changed?