OK, so here is the dilema. I was sitting here looking at some tires this afternoon, wondering about speed and which one would be a faster tire. I know some of you probably already know the answer so go ahead say it. What I am trying to figure out is which tire would give me a higher top speed a Dunlop 739AT 120-100/18 or a Michelin Baja 140-80/18? My initial guess is that the Dunlop being a taller tire would have a higher top end, however then I began thinking about rear sprockets and the smaller the faster, which threw me for a loop with the tire size. So what is the answer?