I just replaced the 255/65/16's on my 2000 ML-320.
I investigated tires and ratings for several months and here is what I came up with.

TOYO Open Country. toyo.com

They have held the top quality award for 7 years running.

Dealers tell me that they don't have to stock TOYO's just order in a set of 4 and 99.9% of the time they are near perfect balance and run out.

Priced at $105.00 ea. installed, wow is that cheaper than $160.00 +

The ride - never had any tire ride this smooth at all speeds.

Tread looks aggressive but there is little to no noise.

The Dunlop Grank Track never rode this well, changed the entire ride and response of the ML.

Good Luck

Don't like buying foreign??? I just looked at a Chevy Equinox at the dealer, The Engine was made in China, the Trani was made in Japan and the SUV was assembled in Canada. - NAFTA I guess.