it all has to do with power and the suspension in the car. you see when a car is very powerful and you floor the pedal. the tires just wanna jump. if you have good tires then you dont slip too much and take off really good. on slicks, your tires grip very good. but because all the power goes to the rear, the car kinda squats. you ever notice after the car squated the front goes up alittle bit? well that has to do with the angle in which the car is pushing. often cars that are lowered have a little bit of a problem with popping wheelies at the track.
you see in a perfect world, the thrust line from the center of the wheel to the lower control arm would be perfectly flat, pushing the car evenly. but in a car that has slicks or is lowered. the center of the wheel is now either higher or lower. so when all that power is transfered to the wheels instead of pushing straight ahead, itll either push up or down, kinda like when u play with a toy car and do a wheelie with it, you usually put your fingers on the back of the toy car and push and the front of the little toy car would pop up. well its kinda the same on a real car.
sorry if i didnt explain it well. its getting late
