Thanks for the review! this probably belongs in the Tires and Wheels thread though.
I'd never heard of Americus tires before.
This past Summer I needed to replace the aging Yokohamas on my '99 E300D so I performed a diligent search of the tires available as to where they were manufactured and what reviews said.
First thing I discovered is there are a lot of Chinese tires are on the market, some quite dubious as I read reports of people making claims they were made elsewhere and claim on them like they wouldn't balance even outright failures like tread separations.
Next came VietNam and Indonesia as sources, there are many imports nowdays. The very last tires I would buy are Michelins, being over priced and trouble I had with them in the past.

I was inclined to buy Cooper tires as they are an American manufacturer but I didn't see any with what I wanted in a tire so after a suggestion from someone with lots of experience in restoring cars I bought Tiger Paws. I'd never owned a set and they have proven good tires for the way we drive. I like the Yokohamas on my vehicle but will be choosing something else and may look at Americus.
All this goes to say one needs to research tires carefully before a purchase.
But as they say YMMV.
DDH

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!