As of 2015, companies that sell 19.5-inch wheels and tires include Rickson Wheel Manufacturing and Performance Plus Tire. Both companies sell a variety wheel and tire widths at this radius, and they design many for specific truck lines.
Rickson Wheel Manufacturing, based in Lutherville, Maryland, manufactures oversized wheels and tires for trucks and sells them over the phone or through unaffiliated retail stores. The company's website provides information about its various 19.5-inch wheels and tires.
Performance Plus Tire sells wheels and tires from its store in Long Beach, California, and online at PerformancePlusTire.com. The company sells numerous 19.5-inch wheels manufactured by Vision Wheels and 19.5-inch tires manufactured by Bridgestone Tires and Mickey Thompson Tire.