The other day I walked by my bike in the garage and happened to notice my back tire was flat. I found about a 3" screw stuck in it. So I call the dealership to see if they have any in stock. The dealership tells me I need to buy a new front tire also because it will not handle right if both tires arnt matched with the same type and wear. The bike and tires are only about 2 months old. Is this just the dealership trying to sell more tires or does he really have a point?