How to Put a Car Rim on a Bicycle

Take the front wheel off using the socket wrench to unscrew the bolt holding it in place. Take the brake calipers off using the pliers.

Take the handle bar off using the L-key set and remove the fork of the bike. This fork will have to be modified to accommodate the wider car wheel.

Lay the fork on a flat surface and measure the space in between. Measure the width of the car wheel. The difference of these two measurements will give you the length of the spacer you need to cut out of the metal pipe. Suppose the difference comes out to be 10 inches; make a mark of 12 inches on the pipe using a marker. The additional 2 inches is to accommodate the brake calipers.

Place the metal pipe on a flat surface and begin to cut according to size, along the marked lines. This makes the spacer that will go on the front fork.

Measure the length of the front fork that was removed. The length of the fork after the addition of the spacer should be equal to the length prior to this modification.

Make a mark on the fork where the fork is closest to the handles and is straight. The upper portion of the fork is curved and straightens out as it proceeds to the bolt socket. The spacer goes where this curve starts. Cut the fork using the hand-held cold saw. Make sure to make a clean level cut to ensure a strong weld joint.

Make a mark in the middle of the spacer cut from the metal pipe. Cut this spacer in two by cutting along the line with the hand-held cold saw. This splits the spacer in two halves, one goes on the right arm of the fork and the other on the left. Make sure the cut is clean.

Weld the right spacer first and allow it to cool down. Once it cools down, weld the left spacer to the left arm of the fork and allow the modified fork to cool.

Trace out the inside wall of the rim on the sheet of aluminum with a marker. This sheet should be thick enough to fit easily in the wall of the rim. Cut along the trace lines using the hand-held cold saw. Make sure the cut is clean. This makes the second wall of the car rim.

Flip the car rim so that the hollow side is facing upward. Place this rim on the rim wall cut from the aluminum sheet. Trace out the hub of the car rim on this wall. Cut out a hole using the variable speed drill. Weld the wall to the car rim.

Measure the space between the ends of the modified fork and cut a piece from the metal pipe accordingly. This makes the new axle. Insert the axle through the hub of the car rim and the wall; weld securely in place. This completes the new front wheel for the bicycle.

Insert the wheel between the fork and bolt on. For the brakes, bend the spring of the brake calipers using the pliers to accommodate for the extra width.

Install the new fork on the bicycle and secure the handle bar with the L-key set. This completes the front.

Measure the space between the rear forks and cut a piece from the metal pipe adding 2 inches as done for the front.

Cut both the arms of the rear fork to accommodate the new spacer. This cut should be as close to the middle bar of the bicycle as possible. Weld the spacers in place and allow it to cool. Repeat Steps 9 to 12 for the rear wheel.