The unit bearing was a great engineering breakthrough. Imagine the time it once took to set up and properly adjust the front hub bearings on big Ford and Dodge 4x4 trucks on the assembly line. A unit ...

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 ...