[MEvang]

This is the one benefit that disc have over drums, no need for adjusting, a big advantage on the Tundra I will admit. I never considered that many feel discs are easier to work on.
Here's the disadvantages. Many rear disc brake trucks that see little heavy work have serious problem with rotor rust up, caliper failures and rapid pad wear because of this. Parking brake problem are also more common.
Now my experience is here in Ohio, in the middle of the rust belt so these problems are surely less likely in other climates and more in others.
Also consider the expense at this point of switching and is it really worth it. It's one thing if a vehicle comes equipped with it it's another to bear the expense of changing since the drum brakes last so long.
Mike