@CrisPierry1, what changed between the day/week before yesterday and yesterday?
Did you start to heat the room?
Did you change anything on the robot?
Also, have you tried to apply antistatic spray as @Connor had recommended?
If you don’t have access to the spray, could you at least try to use laundry dryer sheets to wipe your wheel rollers and/or tiles?
The only time my team lost V5 motor to the static was last year at US Open. It was early on one of the practice fields, before they had chance to spray them.
That motor was powering an end manipulator that was electrically insulated from the rest of the robot. The charge that have been accumulating on unsprayed field or game objects had jumped onto the manipulator and, when voltage had built up high enough, it must have discharged to the rest of the chassis through the motor.
Once we replaced the motor, my team got a waiver from the head inspector to connect the manipulator to the rest of the robot with a small wire to protect the motor in case if static electric charge accumulates again.