Go to the Max Speed test (test course) with almost any of the RWD LM/GT-1 cars...set the rear ride height to the lowest...the front ride height to the highest...the downforce to the highest in the back, and lowest in front.....when you hit the straights, the car will be really un-responsive to turning.
...and when you go to watch the replay, you can see underneith the front tires.
In GT3, though, you can hit really big wheelies with the LM cars....complete with sparks from scraping bodywork.