Just got back from a 5 day, 600 mile trip to the Great Sand Dunes National Park in Southern Colorado ... and turned over 10K miles on the trip back. Even got to use the Select Terrain "sand mode" and kept up stride for stride with a new Jeep Wrangler on the same 4 wheel drive trail. Other side trips to Zapata Ranch for Bison Tour and the Monte Vista Wildlife refuge for the annual sandhill crane migration. All 10K plus miles have been flawless. Hope it holds. Knock on wood!