NASCAR released the Post-Event Penalty Report for Road America:
NASCAR XFINITY Series Road America:
Infraction Date: 8/25/2018 (post-race inspection)
Team: #00-Cole Custer
Violation: Sections 10.9.10.4: Tires and Wheels. Note: Lug nut(s) not properly installed.
Penalty: Crew chief (Jeff Meendering) has been fined $5,000.
See the Road America Post-Event Penalty Report (pdf) for complete details.
— NASCAR —