Bud Grossenbacher

Bud Grossenbacher is an American racing driver with experience in both sports car and karting competitions. Grossenbacher's racing career includes participation in the IMSA Prototype Challenge, where he competed in the LMP3 class. In 2020, he drove for Sean Creech Motorsport in the IMSA Prototype Challenge series, accumulating 59 points and finishing 21st in the standings.

More recently, Grossenbacher has been active in karting. In the 2023 Challenge of the Americas, he secured fast time in qualifying and won the Prefinal in the Ron White Racing ROK Shifter Master class. However, a flat tire in the final race prevented him from taking the win. In the 2024 Challenge of the Americas, he was the fast qualifier and Prefinal winner in Ron White Racing Shifter Masters but had a broken shift lever.

Grossenbacher's racing endeavors showcase his versatility across different racing disciplines, from prototype sports cars to karting.