WHILE IN MOTION, THE RIGHT REAR TIRE SUSTAINED DAMAGE. THE VEHICLE SWERVED TO THE LEFT SIDE OF THE ROAD AND STRUCK THE GUARDRAIL. THE OFFICER REPORTING LISTED THIS AS EQUIPMENT FAILURE BECAUSE THE RIGHT REAR TIRE'S RIM WAS STILL ATTACHED. IT HAD SHEARED OFF THE HUB. THE STUDS HAD BROKEN OFF OF THE HUB ASSEMBLY WHICH CAUSED THE TIRE AND RIM TO DETACH FROM THE VEHICLE. *JG