I really like my Wrangler Silent Armors, they are LT225 75R 16's and they cost me ~.5mpg +/-. They are D rated tires and should last me about 60k with my driving. They are also snowflake rated. They are as good as I want for snow and mud and are good in the rain too. I learned the hard way that they do get loud if you neglect rotating them.
As far as the maintenance, make up a laundry list from the manual and call more than one dealer and ask for a quote. In my area, it is more than worth the 75 mile round trip than to literally drive down the block for the large service appointments.

Parts are cheaper too.
I shopped around for tires too. Saved $5-35/tire (with warranty, which they honored upon contact with a nail) vs. other locations. I bought mine at Tire Barn (no, I have no affiliation nor do I receive a commission nor will I garner their votes)
Boilermaker2
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2005 CRD Sport - "Blackie"
Tow Package
Trac Loc
GDE EcoTune w/ unl torque
Goodyear Wrangler SilentArmor Tires
over 192,000+ miles
100k mile service performed
5V Glow Plugs Installed and ECM updated
