In 1971, the Public Health Cigarette Smoking Act banned television advertising of cigarettes in the United States. Tobacco companies, flush with advertising budgets they could no longer spend on broadcast media, turned to sports sponsorships as an alternative channel. R. J. Reynolds targeted NASCAR's top division, then known as the Grand National Series, which had been running since 1950. The resulting deal brought significant financial investment into the series and marked the beginning of what NASCAR has officially designated its "modern era."
The series carried the full title of Winston Cup Grand National Series until 1986, when "Grand National" was dropped from the name to streamline branding. The changes wrought by RJR's involvement also included a dramatic reduction in the annual schedule, from 48 races down to 31, removing dirt track events and short oval races under 250 miles from the national circuit and transferring them to regional divisions.
NASCAR founder Bill France Sr. handed control of the organization to his son Bill France Jr. in 1972. France Jr. commissioned series publicist Bob Latford to design a new points system, implemented in 1975, that awarded equal points across all races regardless of length or prize money. This system ensured the championship remained mathematically contested throughout the season, requiring top drivers to compete in every event to remain in contention.
The Daytona 500 became the mandatory season opener from 1982 onward. The race gained national prominence in 1979 when CBS broadcast it live from flag to flag — the first stock car race to receive such treatment. The telecast, coinciding with a massive snowstorm along the East Coast, drew an enormous captive audience and dramatically expanded NASCAR's reach beyond its traditional Southern base.
In 1985, Winston introduced a bonus program called the Winston Million, awarding one million dollars to any driver who won three of the four most prestigious races in a season. The prize was won only twice during its existence: Bill Elliott in 1985 and Jeff Gordon in 1997. The Winston Million was replaced in 1998 by the Winston No Bull Five, which awarded a million dollars to any driver winning a marquee race after having finished in the top five of the previous one.
The series experienced a major surge in popularity through the 1990s. In 1994, NASCAR ran the first Brickyard 400 at Indianapolis Motor Speedway, signaling the sport's national ambitions. Between 1997 and 1998 the Daytona 500 prize money tripled. In 1999 NASCAR signed a landmark television contract with Fox, NBC, and Turner Broadcasting valued at $2.4 billion over eight years, cementing Winston Cup racing as a mainstream American sport.
Chevrolet, Ford, and General Motors brands competed throughout the Winston Cup era, with Dodge returning in 2001 after a fifteen-year absence and Toyota joining the series in 2007, after the Winston name had already passed. Among the dominant teams of the era were Hendrick Motorsports, Richard Childress Racing, and Roush Racing, which collectively produced most of the championship-winning cars across the three decades.
Richard Petty and Dale Earnhardt each claimed seven championship titles during the Winston Cup era, with Earnhardt winning his last in 1994. Jeff Gordon emerged as the defining champion of the late 1990s, winning four titles between 1995 and 2001.
R. J. Reynolds notified NASCAR during the 2002 season that it would terminate its title sponsorship at the end of 2003, ahead of schedule, as restrictions on tobacco advertising made the sponsorship increasingly difficult to leverage. Telecommunications company Nextel signed an agreement to replace Winston as title sponsor, beginning with the 2004 season. The Winston Cup Series competed for the final time under that name at the 2003 Ford 400 at Homestead-Miami Speedway, where Bobby Labonte finished the final race of the era.
The Winston Cup era spanned thirty-three seasons and defined the organizational and commercial infrastructure of modern NASCAR. The points system devised during this period, the race schedule, the network television partnerships, and the roster of iconic tracks all took their current shape during this time. The championship trophy and banquet format established in the early 1980s in New York City became lasting traditions. The period produced many of the sport's most celebrated rivalries and its most recognized champions, and the Winston name remained colloquially attached to the series in fan usage for years after the brand's official departure.