[Urbane Guerrilla]

Bald spot = tire gone. Getting out of balance too. Don't try and push it, particularly if you expect rain. The tread pattern is there to help keep your car from hydroplaning; it gives water on the road someplace to go as your tires pass over it. If you hydroplane, you have no directional control. You're a hockey puck until your speed drops enough for the water under your tires to escape again and let your rubber touch the road.