A fire pit is nothing but a hole in the ground lined with something non-flammable to keep it from eroding. A metal wheel is the perfect tool for lining your fire pit. It is the right shape and size and, because it is made out of metal, will not burn or shatter when you have a fire. Building a fire pit from a wheel is within most do-it-yourselfers' capabilities.
Clean off any oil or other residue from the truck wheel rim with an old rag and a metal cleaner.
Dig a hole in the ground big enough to fit the wheel in. Set the wheel inside.
Line the outside of the hole with bricks to create a continuous circle. This will give your fire pit a classier look.
Place a barbecue screen over the bricks to cook with. Remove the screen to build a fire or clean out the pit.