Typically, drivers never come close to the cornering loads necessary to feel the difference, but in the RLX, the quicker you go, the more the nose-heaviness manifests itself in understeer, a tendency to lose grip at the front end while cornering at high lateral loads.
It's not as gritty as the Z, but its longer wheelbase actually helps pin the tail end a bit better, so there's more grip at the very edge of the performance window.