BEHIND BARS, Part II—The Development of the World’s Fastest Small-Tire Racecars, as Told by the People who Developed Them: The 275 and 315 Radial world’s never-ending quest for speed

Written By John F. Katz Photography Courtesy of the Manufacturers/Chassis Builders As what launched as a truly outlaw, grudge-fueled, run-what-you-brung-to-the-unkempt-eighth-mile kind of racing has become increasingly sanctioned, standardized, professionalized—and costly—how has the 10-wide-tire classes retained their still gritty-seductive appeal? “It’s the thrill of it,” replied Tim Lyons, owner of Lyons Custom Motorsports in