I bout a bike and registered it 1/7/2010 and had to get a new license plate. I did not notice then, but the plate tag is June 2010. I only noticed it because I just got a notice from the DMV wanting $71 by 6/20/2010, when I just payed them $180 three months ago. Is there something that I am missing here? Is it six month registration for motorcycles? or is it possible that th DMV made an error? I thought if you register a bike on 1/7/2010 your registration should be good until 1/7/2011.. I know this is kinda off topic, sorry.