Where should the weight of your car be in the back or front?

You want the weight to be balanced front to back, that's why the Indy Cars have wings on the front and back of the cars to add or take away downforce.

On another note the IndyCars also have a weight jacker that adjusts the cross weight on the car from left to right. The weight jacker allows the driver to make fine-tuning adjustments as the car begins to handle differently during the race.