Why would 4x4 owners want to do this? South Bay Truck & 4x4 in Hawthorne, California, tells us that for most owners it’s a concern about the drag of the drivetrain. Fuel economy is increased and wear ...
The last time around, we added a larger, slightly heavier wheel and tire combo and lost a little more than 1 mpg. Granted, with the 6.7L's whacked-out emissions system that dumps raw fuel into the ...
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