Auto World Xtraction Slot Car Rear Tires (Wide White Wall) (12) HO Scale. Auto World Xtraction Front Tires (GOODYEAR) (12) HO Scale. Auto World 4Gear Front Tires (GOODYEAR) (12) HO Scale. Auto World Thunderjet Slot Caro Rear Tires (Wide White Wall) (12) HO Scale.