I've only got 4 mt'r's(different size spare) that are about due for a rotate, is it best to cross rotate(LF to RR, RF to LR) or do they need to stay on the same side/direction?

 

Many different opinions on this and why its worse/better. However, IMHO it wont matter if the right rear is on the right front or the left front. If your alignment is dead nuts on, it will wear even. I would just rotate front to rear, and rear to front, and just leave the sides the same.

 

i think the standard is (at least, what i did with the old 87 p/u) fronts straight back, rears crossed to front. i noticed a diagram in the owner's manual, but forget what it illustrated- and that's out in the truck, in the dark, in the cold, etc...
oh- the application may be different with mtr's- i have zero experience with them.

 

If you have directional tires, you want to keep the tires on the same side of the truck they started at (right rear -> right front, left rear -> left front).

If they aren't directional, it doesn't matter what you do. Cross them if you want or just move rears to front and fronts to rear.

 

Dude it's July. How cold can it be? Or is it the dark that is the problem?