B Bob A New member Jun 13, 2009 #2 It is vent holes to let out air that is trapped in the mold. If it didn't let out the air the tire would have air pockets in it.
It is vent holes to let out air that is trapped in the mold. If it didn't let out the air the tire would have air pockets in it.
D David D New member Jun 13, 2009 #3 The moulds have holes in them to prevent air bubbles forming. They fill with rubber, which wears away quickly once it starts getting used.
The moulds have holes in them to prevent air bubbles forming. They fill with rubber, which wears away quickly once it starts getting used.
