How much faster is file tread than tractor tread? Can anyone quantify the difference? Will it lose anyone a race? This is assuming that the tires are on a hard-packed early season course free of mud and sand.
They feel a bit faster but I think it's hard to quantify. What tires are we talking about specifically? I had the Michelin Jets which I *loved* but only felt comfortable running maybe twice a year. (vs Michelin Muds). That said, I'd say they're about as fast as my Grifos and I can't imagine running the Challenge file tread (might as well run a slick!).
So, file tread is reasonable fast but how often are you going to use it and to what tire are you comparing it to?