Hey everyone I'm new to all this and I need to order some tires for my duster mini bike, the rear tire reads 4.00-6 the front reads 4.10/3.50-6 I was looking through the tires and kind of got confused by all the options, can someone ahead some light on this for me? I also want to put a little larger sprocket on it bust I am also flustered with all the options wight that too, thanks for the help everyone