Note: It's a good idea to assemble all four wheels at once.
This is an efficient way to work and has the added advantage of
allowing the glue on one wheel to set while you work on another.

• Cut out wheel plates (8), wheel spacers (4), and wheel rims
  (4). Note that each wheel plate has a solid black "lug nut." This will
  be used to align the front and back plates when you assemble the wheels.
• Score and bend the wheel spacers.
• Pull
  each rim over the sharp edge of a desk or table top to give the paper a
  curl. Then check the fit of the wheel plates and rims. The rims should
  fit snugly around the wheel plates. Note the amount of overlap required
  and then glue the overlapping ends of each rim together to form a
  circle. Lay the rim on its side on the work surface and check to see
  that it is not warped or twisted.
• Select a rim. Shape it with
  your fingers to as nearly perfect a circle as possible, then place it
  flat on your work surface. Insert a wheel plate, printed side down,
  into the rim. Ease the plate into place until it is flush with the
  bottom edge of the rim. When fitted properly, the wheel plate will
  remain in place without being held. Apply a line of glue around the
  inside of the wheel where plate and rim meet and set aside to dry.
• Repeat, using three more rims and wheel plates. Set aside to dry.
• Select
  a wheel assembly and a wheel spacer. Apply glue to one edge of the
  spacer and set in place in the wheel assembly as shown. Note that the
  spacer must be bent slightly to fit inside the wheel. Repeat with the
  remaining wheels.

Note: If you want to add weight to your truck and give it a
nice "feel" as it rolls, pour salt or clean sand into the wheel
assemblies at this point. Fill each wheel assembly about half full and
then proceed to the next step.

• Select a wheel plate. Apply glue to the top edge of the
  spacer and insert the plate in the rim. Be sure to align the back and
  front wheel plates, using the black "lug nut" as a guide. When plate is
  correctly installed, apply a line of glue around the plate where it
  joins the rim. Set aside to dry.
• Repeat with the remaining wheel assemblies, being careful to align the black dots on each. Set aside to dry.