Traction tires are like dental rubber bands, that fit in grooves that are cut into the wheel treads, which quickly gunk up with oil and grime, and rot away every couple months.
Make a route that is all on a slight downhill gradient, or add a Athearn HO loco onto the consist ... I pulled a 36 car train with 4 Athearn locos, and it really made a huge wreck when the consist pulled inward, on a curve in a stringline derailment.
An HO train platform with 24" - 36" radus curves has allot of friction, where as a model RR club uses gigantic curves, like 72" radius