Hell Ive been running chopped springs on mine for 6 months and the tire have barely worn a spot on the inside... ive put a little over 350 miles on it ... so with wat your asking set the adjustables dead in the center on both sides and drive it their its not gonna wear your tires out as bad as you think... 60 miles isnt that far in tire talk and depending on your rating of tire, which the way your worried sounds like the tires are some expensive ones, unless you have a rating of 300 you shouldnt worry about much... no one can sit here and tell you exactly how to get your truck close as has been stated every one is different... in order for you to do that you can run a plumb line to get it close before you leave your house but its alot of work, about 3 hours for an hour drive, i have aligned my share of vehicles in college as that was the one thing besides a/c that amazed me.. i dont know if this was the answer you were looking for if you have any more questions ill try to answer but im not a 15 year master at it... on another note if you really want too call the alignment shop they should have the specs for you.. they will set you up with the right specs as they have the program to estimate the caster and camber of the lowered suspension...