To help plant yourself in the seat there are a couple of things you can do.

Get some of that drawer liner stuff...it's like a foam waffle. It helps your butt grip leather. Just a 18"x18" piece for you and your co-pilot will suffice.

Try to put your seat back, both bottom and recline. Pull up very snugly on your lap belt and feed all the slack into the re-tractor. Now sharply yank on the shoulder belt until you feel the ratchet grab. Move your seat back into position and it should hold you tightly. This is great for autox as well.


As for your tires...don't worry about mold release and all that hype. Tires grip the most from the start (without getting into tread squirm, shaving tires, etc). Most (pro) race teams will start a race or qualifying with the stickers still on the tires.