There are also several species of 3" wide or greater tires used on wheelchairs....
http://www.edmond-wheelchair.com/16-...hair_tires.htm
They are totally square, and grey in color - unique looking for a chop.
Brad
Originally Posted by geebee
If 3" wide is wide enough Innova make one that fits on a 20" BMX rim. Razor use them for there Viper and I've seen them on several other chopper style bikes.