rear tire

I'm looking for a little bit wider of a rear tire on my bike. The one I have now only has a couple inches of grip actually hitting the pavement. It's my first bike, so I'm fairly new to all of this. But I carry my girlfriend on the back pretty often, since its my main mode of transportation...

Hi there quick question regarding tires for a cruiser bike ( I ride a 2013 Suzuki Boulevard c90t)I came across to different opinions regarding tires some people say PILOT MICHELIN are the best ,others mention DUNLOP 404 and a lot mention AVON as the best of all ,I need some more opinions pls...