Has anyone tried the General Tire G-MAX RS yet?

Blkout said:

I had a set of General G-Max 6 years ago, not sure if it's the same as the RS. They were VERY grippy and I had no complaints until they were worn down to about 50% tread, then the tire noise became unbearable and I replaced them.

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That has me curious why they would get noisier at lower tread depth.

I just assumed that deeper treads were the noisiest, in reference to the big knobbly tires on 4X4's, for example, not that that is a scientific or direct comparison.

Were they the same rubber at the depth or the "warranty claim avoiding rubber" that is super-hard, that appears after the grippy "make the sale" rubber on the surface is worn off?