any soft rubber tire is gonna wear fast on the road. if you want a tire that will hold up well on the road go with the kenda knarlys. they have a stiffer knob that wont wear out as quickly.
all the maxxis and holeshot type tires are geared for woods and track racing. the rubber is soft to get the most bit you can with them. these will wear a lot faster on the road. plus they are expensive.
id go with something cheap for now, which is why i recommended the stock yfz450 tires. they do hold up pretty well on the road as i used to run some country chat roads before i moved out.