Rear wheel travel?

Hi folks does anyone know what the standard rear wheel travel is? And is it measured from rear wheel off the floor until it bottoms out? I am fitting a tail tidy and I am worried about the bracket being too close to the tyre!

Whose tail tidy? If it's GRiSO specific one would expect it to fit?

I've got GTM one fitted & it only slightly drops into space between tyre/seat (and then only each side of tyre) but would think any models that are actually 'tidy' wouldn't close up that big a space...I have gone slightly smaller numberplate but not by much (only about an inch each side)

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Unfortunately it is a universal Chinese affair. The biggest problem is the lump of alloy that mounts it is quite chunky and right in the middle of the tyre. Looks quite nicely made though.

Like how chunky? Unless its massive Id think youd be having a bad time if your wheel was that close to the undertray long before the tire would touch any mounting bracket.