So I need to get new tires and I have a question. In the manual for my bike it says that I need Dunlop 160 or for whitewalls 150. My question is what's the difference? I know the difference between 150 and 160 is the width but I mean between blackwall and whitewall. Can I use any 150 or 160 or is that only applicable for whitewalls? I'm asking because I'm trying to find the best prices on tires and I'm wondering if Pirelli 150's will work. Thanks.