The incident occurred at approximately 9:15 a.m. Two children were riding the bus when the tire detached, but police confirmed that no one was injured — neither the students, the driver, nor anyone inside the bar.

Slingshot Bar, which is part of the Bars & Recreation group and built its reputation on games that involve aiming at targets, leaned into the irony in a statement responding to the damage.

"While Slingshot Bar is all about welcoming guests who enjoy a little friendly competition, aiming and hitting targets, this is definitely not what we had in mind," the bar said.

The cause of the wheel separation was not immediately clear, and it was not known Tuesday whether the bus belonged to a local school district or a private contractor. West Allis police did not release further details about the vehicle or its operator.

The crash highlights a recurring safety concern for families who rely on school buses: while serious injuries from detached wheels are rare, loose lug nuts and wheel failures can turn routine routes into dangerous events, particularly when they occur near busy commercial corridors like National Avenue. The fact that the tire traveled far enough to strike a building — rather than another vehicle or a pedestrian — was a matter of chance on a weekday morning when foot and car traffic are typically picking up.

For now, the bar is left to assess the damage and board up a window that became an unexpected target. No estimate of repair costs was available, and it was not clear when the business would reopen the affected area.

Anyone who witnessed the wheel coming loose or who has information about the bus is asked to contact the West Allis Police Department.