The 1958 USAC Championship Car season consisted of 13 races, beginning in Trenton, New Jersey on March 30 and concluding in Phoenix, Arizona on November 11. There were also five non-championship events. The USAC National Champion was Tony Bettenhausen and the Indianapolis 500 winner was Jimmy Bryan. There were three fatalities during the season. Pat O'Connor lost his life in a first lap accident during the Indy 500. Art Bisch died of injuries suffered during the race at Lakewood Speedway. Jimmy Reece was killed in a late-race incident at the Trenton 100.