Wheel Flange Squeal on West Highland Route

Most likely not using the correct/technical term, but where (what file) would I try looking at to see if I could either get rid of, or at least muffle the squealing sounds on the curves for this route. While I like the route, I find that after a short period of time the squealing noise on the curves starts to get to me. It's like fingernails on a chalkboard and I start turning down the volume on my sound system to the point where I can hardly here anything.
Thanks,
Thanks,