My '07 Dodge CTD w/TC 800 Northstar and 285-75-17 Toyo MT's averages 13-14 mpg in town. Slight increase in all highway travel. Chuck the camper and I pick up 3-4 mpg.
My buddy's '05 Dodge CTD w/SixPac 9.5' hardside and 35-12.50-18 Toyo MT's averages 10 mpg in town and maybe 11-12 mpg on the highway.
Camper configuration makes a huge difference and the added drag of the MT's don't help either.
My 1999 CTD w/DTT auto,Edge EZ and Mach 1.6's got identical mileage to my '07.
I'm still hoping a 265/275-80- 17 comes out. It would be similiar in size to a 265-70-19.5 but without the cost,weight and G-rating.
Last edited by Regcabguy; 04-08-2012 at 10:10 PM.
2007 Dodge 2500 Regcab 4wd 5.9 CTD. G-56 , TC800 Northstar popup 24/7.