For REGISTERING a bike in the us you need a place of residence within the state you are attempting to register it in. In many (all?) states a Post Office Box is not an acceptable address. I am confident that you would not be able to REGISTER a vehicle in the united states on an international drivers license.

I believe that the correct procedure if you are a foreign resident who wishes to buy a vehicle here is to buy it here, register it at home, ship the plates from your home country to the US and put them on the bike. Which sounds a massive pain in the butt.

You won't be able to lie and say you live here because, without a US drivers license from that state they will require that you have some proof of residence such as utility bills sent to your name at the address you're claiming you live at, and they'd probably want you to get a license in that state too, but since you're foreign you'd probably have to take the test, which usually has to be scheduled in advance. Also, many states require US insurance to register a vehicle.

If you don't live in the USA there's no need to register the bike here. You just need some legitimate plates on it (from your home country). If you're not planning on crossing into canada or mexico then you could get away with just putting on any old plate from home even if it wasn't legitimate. Of course, you'd be in a bunch of trouble if you got into an accident with someone, but police won't be able to check if foreign plates are legitimate or not.

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-Dachary & Kay
http://www.CorporateRunaways.com