Superelevation and leaning cars

[MontanaRails]

I happened to notice that the coal cars lean a lot more when going around superelevated curves than the other stock on the HSC...curious as to why this is. The inside wheels dig through the railheads.

[Kali]

If you take them round a flat corner they lean outwards a long way too - that's either just a high CoG, or they need some suspension tweaks.