This is an alternative to actually painting wide white walls on tires.
It works well specially if you want a custom detail, like to call out the manufacturer name on those no name tires we are being presented those days.
You will need an good quality adhesive backing paper, your favorite imaging editing program, a good printer, and a circle cutter (or a really firm hand!!!)
It all starts measuring the tire you want to make white walls too.
Then, using your computer (I used Auto Cad) draw the inner and outer borders of the white wall in a light almost white color.
Next, draw the manufacturer's name of your choice. I drew Firestone.
Here are the measures in millimeters that will work for Revell tires (the ones on the '57 Ford kit) and for AMT Firestones:
Now you are ready to print your drawing with the highest quality possible.
Time to use your circle cutter to cut first the outer edge, and after the inner edge of the white walls:
This will be the result:
Now you can just take your exacto knife, and peel the white wall, and carefully place it over the tire to be white walled:
And here is your final result:
Time to start white walling!!!