Originally Posted by InspGadgt
There's always a trade off between bottoming out or raising the chassis. As you raise the chassis the car has a much higher roll tendency so often you will actually get better performance even when the chassis bottoms out. Most of the bottoming out issues on asphalt have to do either with a bumpy track surface or from crashing the car. Neither of which is going to have an impact on the car's handling. Watch just about any full sized road race at night and you will see sparks from where the chassis bottoms out over the bumps...especially in classes like F1 where they actually have to regulate how much wear is on the board under the car or the teams will wear it right out due to their low ride height.
The fgx has a low roll center up front and it is too low for high bite carpet. Since there is little adjustment up front I had to max out the front ride height thus raising the roll center to keep from traction rolling over the front end. With a high front and a low rear the car pushed really bad so I raised the rear to get front traction back.
I also was bottoming out in our sweeper and the car was doing some really wierd handling tricks so for me the raised roll center and chassis helped a lot more than the occasional chassis scrape.
I guarantee the full size race teams are concerned about bottoming out. Any time you hit the chassis and take the load away from the suspension it causes handling problems. They are not ignoring the occasional scrape. The goal is to maximize handling while minimizing ride height without scraping although they do occasionally scrape.