We have the 25.2 and also try to cruise at about 65. No mileage estimates yet as everytime we have gone out we are either in the mountains or pulling a 5500 pound trailer. I do know, you have to watch it on interstate highways, you may look down and find you are doing 75. they will really go....It wont hurt anything but your mileage. We can actually hear a engine noise increase about 67, that makes it easier to keep down. As far as stopping, these things do really well, because the have all 4 wheel disc brakes.
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