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[EJ25RUN]

I am sure this is an ignorant question, but I'd like to know anyways. What are the holes for in the back window of the car in the last pic?

On the blue car? It is probably to allow smoke from the tires to escape from inside the cabin.

[TopSpeedInc]

On the blue car? It is probably to allow smoke from the tires to escape from inside the cabin.

When racing you will have air trapped into the cabin. And it basically acts as a parachute to the vehicle somewhat. When you drill holes like that it can allow the air to escape without slowing you down too much.

[dazn]

When racing you will have air trapped into the cabin. And it basically acts as a parachute to the vehicle somewhat. When you drill holes like that it can allow the air to escape without slowing you down too much.

also on some cars it allows you to reach certain things like a weight jacker, or some sort of shock or spring adjustment. sometimes it can be where the nitrogen line plugs in for airjacks. easy access to it means quick work/changes in the pits

[EJ25RUN]

When racing you will have air trapped into the cabin. And it basically acts as a parachute to the vehicle somewhat. When you drill holes like that it can allow the air to escape without slowing you down too much.

also on some cars it allows you to reach certain things like a weight jacker, or some sort of shock or spring adjustment. sometimes it can be where the nitrogen line plugs in for airjacks. easy access to it means quick work/changes in the pits

Good information. Thanx.