Why Do Small Front Wheels on Drag Race Cars Prevent Nosing Upward?

[jlaugh87]

Homework Statement

(On a drag race car with large rear wheels and small front wheels) The front wheels in the race car help keep the vehicle from nosing upward when it accelerates. Why is this?

Homework Equations

The Attempt at a Solution

 

[learningphysics]

I think it's related to air resistance... but I'm not sure.