Chevrolet Silverado Classic 2007 Owner's Manual page 558

If your vehicle has dual rear wheels and the tread
design for your front tires is the same as your
rear tires, always use one of the correct rotation
patterns shown here when rotating your tires.
558
The dual tires are rotated as a pair, and the inside
rear tires become the outside rear tires.
When you install dual wheels, be sure the vent
holes in the inner and outer wheels on each side
are lined up.
After the tires have been rotated, adjust the front
and rear inflation pressures as shown on the
Tire and Loading Information label. See Loading
Your Vehicle on page 409.
Make certain that all wheel nuts are properly
tightened. See "Wheel Nut Torque" under
Capacities and Specifications on page 611.
If your vehicle has dual
rear wheels and the
tread design for the front
tires is different from
the dual rear tires,
always use the correct
rotation pattern
shown here when
rotating your tires.