Has anyone got any knowledge on acceptable back lash on the standard 7” LSD rear diff?

I have 18’s fitted to my car and when both rear wheels are lifted off the ground you can turn one wheel around 10cm on the outer circumference before it engages the other wheel. Is this to be expected?

Be interested to know if I should expect the same on the front diff.

I do have videos but have no idea how to upload them!