Originally posted by trwinship:
Interesting discussion, but I'm missing something: if the hubs are locked, but 4wd is disengaged, the front wheels are mechanically still locked to the front axle, although not powered by the front propeller shaft. So, does that mean that the front wheels, still locked to the front axle, must always rotate at the same speed? If true, that sounds like it would be bad for tire wear. I've driven a lot in 2WD with the front hubs locked and never noticed any problem, so I'm just curious.
Tire wear would remain the same. But there is slightly more drivetrain wear since the driveshafts are moving while not needed. If the need for 4wd is anticipated, it is not neccessarily bad to have your hubs locked. Some people in snowy areas of the country leave their manual hubs locked all the time. The ability to shift into 4wd without getting out of their trucks is worth the added wear and tear on the front drivetrain.
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